tegˈmentəm noun
or teg·u·men·tum -gyəˈ-
( plural tegmen·ta or tegumen·ta -tə)
Etymology: New Latin, from Latin, covering, integument — more at tegument
: covering: as
a. : the part of the cerebral peduncles above the substantia nigra formed of longitudinal white fibers with arched transverse fibers and gray matter
b.
(1) : the outer covering of scales on a leaf bud
(2) : one of these scales
c. : the outer layer of a plate of a chiton — compare articulamentum