| 释义 |
Definition of ganoid in English: ganoidadjective ˈɡanɔɪdˈɡænɔɪd Zoology 1(of fish scales) hard and bony with a shiny surface that resembles enamel. （鱼鳞）硬的，闪光的，似釉质的。比较CTENOID 和PLACOID Compare with ctenoid and placoid Example sentencesExamples - The actinopterygians quickly jettisoned their ganoid scales and thus dispensed with the need for most endochondral bone.
- This species has specialized scales, which are called ganoid scales, and it has nostrils or nares on tentacles that protrude from the head.
- They also possess a heterocercal caudal fin and remnants of ganoid scales; both are uncommon among extant actinopterygians.
- Actinopterygians may have ganoid, cycloid, or ctenoid scales, or no scales at all in many groups.
- Gar species in North America are easily recognized by their long snouts, sharply toothed jaws, non-overlapping and diamond shaped ganoid scales, and posterior placement of dorsal and anal fins on the body.
- 1.1 (of a fish) having ganoid scales.
（鱼）硬鳞的，光鳞的 Example sentencesExamples - The purpose of this research is to study ganoid fish taphonomy, specifically, how each type of fish decomposes, including anatomical location and extent of postmortem damage, and possibly, its cause.
noun ˈɡanɔɪdˈɡænɔɪd Zoology A primitive fish that has ganoid scales, e.g. a sturgeon or freshwater garfish. 硬鳞鱼，光鳞鱼（如多鳍鱼、鲟鱼或淡水长嘴硬鳞鱼，颌针鱼） Example sentencesExamples - The ganoids had already reached their evolutionary climax in the Permian and Triassic, some 270-190 million years ago; today they are few in number when compared with the dominant bony fishes.
- Bony fishes, lungfishes, & most ganoids - retain highly cartilaginous neurocranium that is covered by membrane bone
- In the ganoids the upper lobe of the tail fin is the largest.
- I tried to follow his scheme of division into the order of ctenoids and ganoids, with the result that I found one of my species of side-swimmers had cycloid scales on one side and ctenoid on the other.
- In the collection of ganoids the most complete is representation of Acipenseriformes, mainly of acipenserids proper.
OriginMid 19th century: from French ganoïde, from Greek ganos 'brightness'. Definition of ganoid in US English: ganoidadjectiveˈɡænɔɪdˈɡanoid Zoology 1(of fish scales) hard and bony with a shiny surface that resembles enamel. （鱼鳞）硬的，闪光的，似釉质的。比较CTENOID 和PLACOID Compare with ctenoid and placoid Example sentencesExamples - Gar species in North America are easily recognized by their long snouts, sharply toothed jaws, non-overlapping and diamond shaped ganoid scales, and posterior placement of dorsal and anal fins on the body.
- They also possess a heterocercal caudal fin and remnants of ganoid scales; both are uncommon among extant actinopterygians.
- Actinopterygians may have ganoid, cycloid, or ctenoid scales, or no scales at all in many groups.
- The actinopterygians quickly jettisoned their ganoid scales and thus dispensed with the need for most endochondral bone.
- This species has specialized scales, which are called ganoid scales, and it has nostrils or nares on tentacles that protrude from the head.
- 1.1 (of a fish) having ganoid scales.
（鱼）硬鳞的，光鳞的 Example sentencesExamples - The purpose of this research is to study ganoid fish taphonomy, specifically, how each type of fish decomposes, including anatomical location and extent of postmortem damage, and possibly, its cause.
nounˈɡænɔɪdˈɡanoid Zoology A primitive fish that has ganoid scales, e.g. a sturgeon or freshwater garfish. 硬鳞鱼，光鳞鱼（如多鳍鱼、鲟鱼或淡水长嘴硬鳞鱼，颌针鱼） Example sentencesExamples - In the collection of ganoids the most complete is representation of Acipenseriformes, mainly of acipenserids proper.
- I tried to follow his scheme of division into the order of ctenoids and ganoids, with the result that I found one of my species of side-swimmers had cycloid scales on one side and ctenoid on the other.
- The ganoids had already reached their evolutionary climax in the Permian and Triassic, some 270-190 million years ago; today they are few in number when compared with the dominant bony fishes.
- In the ganoids the upper lobe of the tail fin is the largest.
- Bony fishes, lungfishes, & most ganoids - retain highly cartilaginous neurocranium that is covered by membrane bone
OriginMid 19th century: from French ganoïde, from Greek ganos ‘brightness’. |