| 释义 |
pecten /ˈpɛktɛn /noun (plural pectens or pectines /ˈpɛktɪniːz/) Zoology1Any of a number of comb-like structures occurring in animal bodies, in particular: 1.1A pigmented vascular projection from the choroid in the eye of a bird.The pecten forms the staff of the pigeon's omniscient sight. 1.2An appendage of an insect consisting of or bearing a row of bristles or chitinous teeth. 1.3A sensory appendage on the underside of a scorpion. 2A scallop.- Genus Pecten, family Pectinidae.
Derivatives pectinate /ˈpɛktɛnət/ adjective ...- Many species have thickly feathered legs; their well-developed talons have a smooth edge on the claw of the third toe (in contrast to the pectinate claw of the tytonids), which is longer than the second toe.
- The most striking difference is the elimination of the postcranially primitive clade of hominoids in the early Miocene in favor of a pectinate succession of taxa.
- They have long legs, and their inner toe, which is as long as the middle one, has a pectinate claw.
pectinated /ˈpɛktɛneɪtɪd/ adjective ...- It differs in having ribs that are not as deeply pectinated and in having ribs that increase in number proximally by insertion rather than by bifurcation.
pectination /pɛktɛˈneɪʃ(ə)n/ nounOrigin Late Middle English (denoting the metacarpus): from Latin pecten, pectin- 'a comb, rake'. Rhymes pectin |