tegmen
Pronunciation: /ˈtɛgmɛn/
noun ( plural tegmina)
Biology- a covering structure or roof of an organ, in particular:
- Entomology a sclerotized forewing serving to cover the hindwing in grasshoppers and related insects.
- Botany the delicate inner protective layer of a seed.
- (also tegmen tympani) Anatomy a plate of thin bone forming the roof of the middle ear, a part of the temporal bone.
Origin:
early 19th century: from Latin, 'covering', from tegere 'to cover'