| 释义 |
ex·o·gy·ra
\ˌeksəˈjīrə\ noun
Usage: capitalized
Etymology: New Latin, from exo- + -gyra (from Greek gyros ring, circle, from gyros round) — more at cower
: a genus of Upper Jurassic and Cretaceous bivalve mollusks that have thick shells and spirally twisted beak and are related to the true oysters |