- elasmobranch (n.)
[elasmobranch 词源字典]
- 1859, from Elasmobranchii, class of fishes that includes sharks and rays, from comb. form of Greek elasmos "metal plate," from elan "to strike" (see elastic) + brankhia "gill."[elasmobranch etymology, elasmobranch origin, 英语词源]