| 释义 |
py·gid·i·um
\pīˈjidēəm\ noun
(plural pygid·ia \-ēə\)
Etymology: New Latin, from Greek pygidion small rump, from pygē rump + -idion -idium
: a caudal structure or the terminal body region of various invertebrates: as
a. : the caudal plate of a trilobite
b. : the terminal tergite of an insect's abdomen |