tergum

[tur-guh m] /ˈtɜr gəm/
noun, plural terga
[tur-guh] /ˈtɜr gə/ (Show IPA).
Zoology
1.
the dorsal surface of a body segment of an arthropod.
Origin
1820-30; < Latin: the back
British Dictionary definitions for tergum

tergum

/ˈtɜːɡəm/
noun (pl) -ga (-ɡə)
1.
a cuticular plate covering the dorsal surface of a body segment of an arthropod Compare sternum (sense 3)
Derived Forms
tergal, adjective
Word Origin
C19: from Latin: the back