Definition of phreatic in English:

phreatic

adjective frɪˈatɪkfriˈædɪk

Geology

1Relating to or denoting underground water in the zone of saturation (beneath the water table).
〔地质〕（饱水带）潜水的；地下水的。比较VADOSE
Compare with vadose
Example sentencesExamples
- For example, they may occur in the continental realm above the water table - the vadose zone; or in the permanently shallow saturated zone - the phreatic zone, in either freshwater or marine conditions.
- In 1990 John Cordingley found that the sump had disappeared and that the passage continued along a tube to a step up into a small phreatic rift.
- In the case of the Kendrick Formation, however, the system was closed by early compaction of surrounding clays, and diagenesis apparently occurred in a marine phreatic environment.
- Gravitational sediments can enter a cave system in the form of entrance talus material, colluvium, roof fall, or phreatic infiltrates.
- Conversely, grainstone fabrics of the upper sequences show the development of bladed and equant calcite cement around oolites, indicative of a primary cementation in a freshwater phreatic environment.
1. 1.1 (of a volcanic eruption) caused by the heating and expansion of groundwater.
  （火山喷发）地下水升温膨胀引起的，蒸气喷发的
  Example sentencesExamples
  This type of eruption, called a phreatic eruption, is characterized by a volcanic crater that goes beneath the level of the surrounding landscape and is encircled by a wide, low ring of volcanic debris.
  That in 4390 was large and complex, with eruptions at the central vent and radial fissures on the flank, submarine and phreatic eruptions, and pyroclastic flows.
  This eruption began in July 1995 with phreatic explosions following 3 years of precursory seismic activity.
  Eruptions after 26 October 1986 were phreatic steam explosions, not direct expressions of magma.
  The characteristic tuffs of the Balder Formation originate from phreatic eruptions from the incipient continental rift zone between Eurasia and Greenland to the west.

Origin

Late 19th century: from Greek phrear, phreat- 'a well' + -ic.

Definition of phreatic in US English:

phreatic

adjectivefriˈædɪkfrēˈadik

Geology

1Relating to or denoting underground water in the zone of saturation (beneath the water table).
〔地质〕（饱水带）潜水的；地下水的。比较VADOSE
Compare with vadose
Example sentencesExamples
- For example, they may occur in the continental realm above the water table - the vadose zone; or in the permanently shallow saturated zone - the phreatic zone, in either freshwater or marine conditions.
- In 1990 John Cordingley found that the sump had disappeared and that the passage continued along a tube to a step up into a small phreatic rift.
- Gravitational sediments can enter a cave system in the form of entrance talus material, colluvium, roof fall, or phreatic infiltrates.
- In the case of the Kendrick Formation, however, the system was closed by early compaction of surrounding clays, and diagenesis apparently occurred in a marine phreatic environment.
- Conversely, grainstone fabrics of the upper sequences show the development of bladed and equant calcite cement around oolites, indicative of a primary cementation in a freshwater phreatic environment.
1. 1.1 (of a volcanic eruption) caused by the heating and expansion of groundwater.
  （火山喷发）地下水升温膨胀引起的，蒸气喷发的
  Example sentencesExamples
  The characteristic tuffs of the Balder Formation originate from phreatic eruptions from the incipient continental rift zone between Eurasia and Greenland to the west.
  This type of eruption, called a phreatic eruption, is characterized by a volcanic crater that goes beneath the level of the surrounding landscape and is encircled by a wide, low ring of volcanic debris.
  That in 4390 was large and complex, with eruptions at the central vent and radial fissures on the flank, submarine and phreatic eruptions, and pyroclastic flows.
  Eruptions after 26 October 1986 were phreatic steam explosions, not direct expressions of magma.
  This eruption began in July 1995 with phreatic explosions following 3 years of precursory seismic activity.

Origin

Late 19th century: from Greek phrear, phreat- ‘a well’ + -ic.

词汇	phreatic
释义	Definition of phreatic in English: phreatic adjective frɪˈatɪkfriˈædɪk Geology 1Relating to or denoting underground water in the zone of saturation (beneath the water table). 〔地质〕（饱水带）潜水的；地下水的。比较VADOSE Compare with vadose Example sentencesExamples For example, they may occur in the continental realm above the water table - the vadose zone; or in the permanently shallow saturated zone - the phreatic zone, in either freshwater or marine conditions. In 1990 John Cordingley found that the sump had disappeared and that the passage continued along a tube to a step up into a small phreatic rift. In the case of the Kendrick Formation, however, the system was closed by early compaction of surrounding clays, and diagenesis apparently occurred in a marine phreatic environment. Gravitational sediments can enter a cave system in the form of entrance talus material, colluvium, roof fall, or phreatic infiltrates. Conversely, grainstone fabrics of the upper sequences show the development of bladed and equant calcite cement around oolites, indicative of a primary cementation in a freshwater phreatic environment. 1.1 (of a volcanic eruption) caused by the heating and expansion of groundwater. （火山喷发）地下水升温膨胀引起的，蒸气喷发的 Example sentencesExamples This type of eruption, called a phreatic eruption, is characterized by a volcanic crater that goes beneath the level of the surrounding landscape and is encircled by a wide, low ring of volcanic debris. That in 4390 was large and complex, with eruptions at the central vent and radial fissures on the flank, submarine and phreatic eruptions, and pyroclastic flows. This eruption began in July 1995 with phreatic explosions following 3 years of precursory seismic activity. Eruptions after 26 October 1986 were phreatic steam explosions, not direct expressions of magma. The characteristic tuffs of the Balder Formation originate from phreatic eruptions from the incipient continental rift zone between Eurasia and Greenland to the west. Origin Late 19th century: from Greek phrear, phreat- 'a well' + -ic. Definition of phreatic in US English: phreatic adjectivefriˈædɪkfrēˈadik Geology 1Relating to or denoting underground water in the zone of saturation (beneath the water table). 〔地质〕（饱水带）潜水的；地下水的。比较VADOSE Compare with vadose Example sentencesExamples For example, they may occur in the continental realm above the water table - the vadose zone; or in the permanently shallow saturated zone - the phreatic zone, in either freshwater or marine conditions. In 1990 John Cordingley found that the sump had disappeared and that the passage continued along a tube to a step up into a small phreatic rift. Gravitational sediments can enter a cave system in the form of entrance talus material, colluvium, roof fall, or phreatic infiltrates. In the case of the Kendrick Formation, however, the system was closed by early compaction of surrounding clays, and diagenesis apparently occurred in a marine phreatic environment. Conversely, grainstone fabrics of the upper sequences show the development of bladed and equant calcite cement around oolites, indicative of a primary cementation in a freshwater phreatic environment. 1.1 (of a volcanic eruption) caused by the heating and expansion of groundwater. （火山喷发）地下水升温膨胀引起的，蒸气喷发的 Example sentencesExamples The characteristic tuffs of the Balder Formation originate from phreatic eruptions from the incipient continental rift zone between Eurasia and Greenland to the west. This type of eruption, called a phreatic eruption, is characterized by a volcanic crater that goes beneath the level of the surrounding landscape and is encircled by a wide, low ring of volcanic debris. That in 4390 was large and complex, with eruptions at the central vent and radial fissures on the flank, submarine and phreatic eruptions, and pyroclastic flows. Eruptions after 26 October 1986 were phreatic steam explosions, not direct expressions of magma. This eruption began in July 1995 with phreatic explosions following 3 years of precursory seismic activity. Origin Late 19th century: from Greek phrear, phreat- ‘a well’ + -ic.
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