ə̇n.ˈtegyəmənt noun
( -s )
Etymology: Latin integumentum, from integere to cover (from in- in- (II) + tegere to cover) + -mentum -ment — more at thatch
1. : something that covers or encloses : covering , envelope
still encased in a dry brittle integument that had once been leather — A.B.Chandler
almost any integument of a book before the age of cloth, is attractive — R.W.Chapman
2. : an external coating or investment: as
a. : one of the usually two envelopes that enclose the nucellus of an ovule, that are often fused, and that sometimes with other parts form the seed coat
b. : an enveloping layer, membrane, or structure (as the skin of a fish or the exoskeleton of an insect)