Definition of dihedral in English:

dihedral

adjective dʌɪˈhiːdr(ə)ldaɪˈhidrəl

Having or contained by two plane faces.
二面的
a dihedral angle
二面角。
Example sentencesExamples
- This difference is studied via contour plots of stacking probabilities as a function of the two central dihedral angles of the 3-atom linker.
- The 3D symmetries are identified by including dihedral angle information in the atom and molecular names so that two traversais match only if they are not only chemically equivalent but also conformationally equivalent.
- If the right reflection matrix is added, the dihedral group D 6 can be made.
- In each test, we compared simulations guided by the wriggling algorithm to ones guided by a standard thrashing algorithm in which the dihedral angles are varied independently.
- During the simulated-annealing simulations, changes in the dihedral angles are generated randomly for both side-chain and main-chain dihedral angles.

noun dʌɪˈhiːdr(ə)ldaɪˈhidrəl

1An angle formed by two plane faces.
二面的
Example sentencesExamples
- A reflectional symmetry is distinguished from a rotational symmetry by the fact that all dihedrals have their signs inverted, except for 180°, which is equivalent to 0°.
- Moreover, the fraction of stacked conformations for a given set of linker dihedrals is consistently greater for the bis-adenyl compounds than for the bis-naphthyl compounds.
- There is no significant difference in the number of trans conformations along the alkyl chain dihedrals in the presence of PCP.
- Bond distances, angles, and dihedrals, as well as the force constants, were taken for analogy with amino acids having similar functional groups (tyrosine and serine).
- Over the final 2000 steps of the protein minimization procedure, there were no restraints on side-chain dihedrals nor harmonic restraints on atomic positions.
2Aeronautics
mass noun Inclination of an aircraft's wing from the horizontal, especially upwards away from the fuselage.
〔航空〕（机翼）反角。比较ANHEDRAL
Compare with anhedral
Example sentencesExamples
- The first nine B - 25s had wings of constant dihedral, and - from personal experience - they were fun and very easy to fly, being extremely stable.
- Towing is much easier with a glider with dihedral.
- Further, given that dihedral diminishes gliding performance, its infrequent use suggests that a premium is placed on maximizing lift to drag ratio (that is, maximizing efficiency) during gliding.
- Airplanes with high dihedral and the filler caps mounted far out on the wings won't show any level at all when there's still half-tanks aboard.
- This problem was countered by incorporating 15 degrees of dihedral in the horizontal tail, which initially had been virtually dead flat.
3North American Climbing
A place where two planes of rock meet at an angle of between 60° and 120°.
〔登山〕〈北美〉向内的转角，V型裂隙（指岩石的两个面相交成60° 到120°角的地方）
Example sentencesExamples
- Leading the way, I arrive at a small tree that has somehow found a footing in the steep dihedral about seventy feet above the ground.
- The predominance of the cracks and dihedrals seemed to fall between hard 5.9 and straight-on 5.11, offering no moderate exit/escape, but late the first day I found a likely-looking ramp that seemed to lead to the top.
- I then fought through a bush around an overhang, and then ran it out over a short slab to a small ledge at the base of an easy looking dihedral.
- We meant to simply repeat his route, but several pitches up, where that route goes up and right into blocky cracks, we angled up and left into the obvious dihedral that shoots to the top of the wall.
- The dihedral, a corner inset in the rock face, is going to be even trickier to down-climb, and if it starts to rain, we could be in trouble.

Origin

Late 18th century: from di-¹ 'two' + -hedral (see -hedron).

Rhymes

anhedral, cathedral, tetrahedral

Definition of dihedral in US English:

dihedral

adjectivedaɪˈhidrəldīˈhēdrəl

Having or contained by two plane faces.
二面的
a dihedral angle
二面角。
Example sentencesExamples
- This difference is studied via contour plots of stacking probabilities as a function of the two central dihedral angles of the 3-atom linker.
- In each test, we compared simulations guided by the wriggling algorithm to ones guided by a standard thrashing algorithm in which the dihedral angles are varied independently.
- If the right reflection matrix is added, the dihedral group D 6 can be made.
- The 3D symmetries are identified by including dihedral angle information in the atom and molecular names so that two traversais match only if they are not only chemically equivalent but also conformationally equivalent.
- During the simulated-annealing simulations, changes in the dihedral angles are generated randomly for both side-chain and main-chain dihedral angles.

noundaɪˈhidrəldīˈhēdrəl

1An angle formed by two plane faces.
二面的
Example sentencesExamples
- A reflectional symmetry is distinguished from a rotational symmetry by the fact that all dihedrals have their signs inverted, except for 180°, which is equivalent to 0°.
- Bond distances, angles, and dihedrals, as well as the force constants, were taken for analogy with amino acids having similar functional groups (tyrosine and serine).
- Over the final 2000 steps of the protein minimization procedure, there were no restraints on side-chain dihedrals nor harmonic restraints on atomic positions.
- Moreover, the fraction of stacked conformations for a given set of linker dihedrals is consistently greater for the bis-adenyl compounds than for the bis-naphthyl compounds.
- There is no significant difference in the number of trans conformations along the alkyl chain dihedrals in the presence of PCP.
1. 1.1Aeronautics Inclination of an aircraft's wing from the horizontal, especially upward away from the fuselage.
  〔航空〕（机翼）反角。比较ANHEDRAL
  Compare with anhedral
  Example sentencesExamples
  The first nine B - 25s had wings of constant dihedral, and - from personal experience - they were fun and very easy to fly, being extremely stable.
  This problem was countered by incorporating 15 degrees of dihedral in the horizontal tail, which initially had been virtually dead flat.
  Airplanes with high dihedral and the filler caps mounted far out on the wings won't show any level at all when there's still half-tanks aboard.
  Towing is much easier with a glider with dihedral.
  Further, given that dihedral diminishes gliding performance, its infrequent use suggests that a premium is placed on maximizing lift to drag ratio (that is, maximizing efficiency) during gliding.
2. 1.2North American Climbing A place where two planes of rock meet at an angle of between 60° and 120°.
  〔登山〕〈北美〉向内的转角，V型裂隙（指岩石的两个面相交成60° 到120°角的地方）
  Example sentencesExamples
  We meant to simply repeat his route, but several pitches up, where that route goes up and right into blocky cracks, we angled up and left into the obvious dihedral that shoots to the top of the wall.
  The dihedral, a corner inset in the rock face, is going to be even trickier to down-climb, and if it starts to rain, we could be in trouble.
  The predominance of the cracks and dihedrals seemed to fall between hard 5.9 and straight-on 5.11, offering no moderate exit/escape, but late the first day I found a likely-looking ramp that seemed to lead to the top.
  Leading the way, I arrive at a small tree that has somehow found a footing in the steep dihedral about seventy feet above the ground.
  I then fought through a bush around an overhang, and then ran it out over a short slab to a small ledge at the base of an easy looking dihedral.

Origin

Late 18th century: from di- ‘two’ + -hedral (see -hedron).

词汇	dihedral
释义	Definition of dihedral in English: dihedral adjective dʌɪˈhiːdr(ə)ldaɪˈhidrəl Having or contained by two plane faces. 二面的 a dihedral angle 二面角。 Example sentencesExamples This difference is studied via contour plots of stacking probabilities as a function of the two central dihedral angles of the 3-atom linker. The 3D symmetries are identified by including dihedral angle information in the atom and molecular names so that two traversais match only if they are not only chemically equivalent but also conformationally equivalent. If the right reflection matrix is added, the dihedral group D 6 can be made. In each test, we compared simulations guided by the wriggling algorithm to ones guided by a standard thrashing algorithm in which the dihedral angles are varied independently. During the simulated-annealing simulations, changes in the dihedral angles are generated randomly for both side-chain and main-chain dihedral angles. noun dʌɪˈhiːdr(ə)ldaɪˈhidrəl 1An angle formed by two plane faces. 二面的 Example sentencesExamples A reflectional symmetry is distinguished from a rotational symmetry by the fact that all dihedrals have their signs inverted, except for 180°, which is equivalent to 0°. Moreover, the fraction of stacked conformations for a given set of linker dihedrals is consistently greater for the bis-adenyl compounds than for the bis-naphthyl compounds. There is no significant difference in the number of trans conformations along the alkyl chain dihedrals in the presence of PCP. Bond distances, angles, and dihedrals, as well as the force constants, were taken for analogy with amino acids having similar functional groups (tyrosine and serine). Over the final 2000 steps of the protein minimization procedure, there were no restraints on side-chain dihedrals nor harmonic restraints on atomic positions. 2Aeronautics mass noun Inclination of an aircraft's wing from the horizontal, especially upwards away from the fuselage. 〔航空〕（机翼）反角。比较ANHEDRAL Compare with anhedral Example sentencesExamples The first nine B - 25s had wings of constant dihedral, and - from personal experience - they were fun and very easy to fly, being extremely stable. Towing is much easier with a glider with dihedral. Further, given that dihedral diminishes gliding performance, its infrequent use suggests that a premium is placed on maximizing lift to drag ratio (that is, maximizing efficiency) during gliding. Airplanes with high dihedral and the filler caps mounted far out on the wings won't show any level at all when there's still half-tanks aboard. This problem was countered by incorporating 15 degrees of dihedral in the horizontal tail, which initially had been virtually dead flat. 3North American Climbing A place where two planes of rock meet at an angle of between 60° and 120°. 〔登山〕〈北美〉向内的转角，V型裂隙（指岩石的两个面相交成60° 到120°角的地方） Example sentencesExamples Leading the way, I arrive at a small tree that has somehow found a footing in the steep dihedral about seventy feet above the ground. The predominance of the cracks and dihedrals seemed to fall between hard 5.9 and straight-on 5.11, offering no moderate exit/escape, but late the first day I found a likely-looking ramp that seemed to lead to the top. I then fought through a bush around an overhang, and then ran it out over a short slab to a small ledge at the base of an easy looking dihedral. We meant to simply repeat his route, but several pitches up, where that route goes up and right into blocky cracks, we angled up and left into the obvious dihedral that shoots to the top of the wall. The dihedral, a corner inset in the rock face, is going to be even trickier to down-climb, and if it starts to rain, we could be in trouble. Origin Late 18th century: from di-¹ 'two' + -hedral (see -hedron). Rhymes anhedral, cathedral, tetrahedral Definition of dihedral in US English: dihedral adjectivedaɪˈhidrəldīˈhēdrəl Having or contained by two plane faces. 二面的 a dihedral angle 二面角。 Example sentencesExamples This difference is studied via contour plots of stacking probabilities as a function of the two central dihedral angles of the 3-atom linker. In each test, we compared simulations guided by the wriggling algorithm to ones guided by a standard thrashing algorithm in which the dihedral angles are varied independently. If the right reflection matrix is added, the dihedral group D 6 can be made. The 3D symmetries are identified by including dihedral angle information in the atom and molecular names so that two traversais match only if they are not only chemically equivalent but also conformationally equivalent. During the simulated-annealing simulations, changes in the dihedral angles are generated randomly for both side-chain and main-chain dihedral angles. noundaɪˈhidrəldīˈhēdrəl 1An angle formed by two plane faces. 二面的 Example sentencesExamples A reflectional symmetry is distinguished from a rotational symmetry by the fact that all dihedrals have their signs inverted, except for 180°, which is equivalent to 0°. Bond distances, angles, and dihedrals, as well as the force constants, were taken for analogy with amino acids having similar functional groups (tyrosine and serine). Over the final 2000 steps of the protein minimization procedure, there were no restraints on side-chain dihedrals nor harmonic restraints on atomic positions. Moreover, the fraction of stacked conformations for a given set of linker dihedrals is consistently greater for the bis-adenyl compounds than for the bis-naphthyl compounds. There is no significant difference in the number of trans conformations along the alkyl chain dihedrals in the presence of PCP. 1.1Aeronautics Inclination of an aircraft's wing from the horizontal, especially upward away from the fuselage. 〔航空〕（机翼）反角。比较ANHEDRAL Compare with anhedral Example sentencesExamples The first nine B - 25s had wings of constant dihedral, and - from personal experience - they were fun and very easy to fly, being extremely stable. This problem was countered by incorporating 15 degrees of dihedral in the horizontal tail, which initially had been virtually dead flat. Airplanes with high dihedral and the filler caps mounted far out on the wings won't show any level at all when there's still half-tanks aboard. Towing is much easier with a glider with dihedral. Further, given that dihedral diminishes gliding performance, its infrequent use suggests that a premium is placed on maximizing lift to drag ratio (that is, maximizing efficiency) during gliding. 1.2North American Climbing A place where two planes of rock meet at an angle of between 60° and 120°. 〔登山〕〈北美〉向内的转角，V型裂隙（指岩石的两个面相交成60° 到120°角的地方） Example sentencesExamples We meant to simply repeat his route, but several pitches up, where that route goes up and right into blocky cracks, we angled up and left into the obvious dihedral that shoots to the top of the wall. The dihedral, a corner inset in the rock face, is going to be even trickier to down-climb, and if it starts to rain, we could be in trouble. The predominance of the cracks and dihedrals seemed to fall between hard 5.9 and straight-on 5.11, offering no moderate exit/escape, but late the first day I found a likely-looking ramp that seemed to lead to the top. Leading the way, I arrive at a small tree that has somehow found a footing in the steep dihedral about seventy feet above the ground. I then fought through a bush around an overhang, and then ran it out over a short slab to a small ledge at the base of an easy looking dihedral. Origin Late 18th century: from di- ‘two’ + -hedral (see -hedron).
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