| 释义 |
pro·tegulum
\(ˈ)prō+\ noun
(-s)
Etymology: New Latin, from pro- (I) + Latin tegulum covering, from tegere to cover + -ulum (neuter of -ulus -ule) — more at thatch
: the embryonic shell of a brachiopod that is biconvex and smooth and has a wide posterior gape |