quadrate
▸ noun /ˈkwädrāt, , ˈkwɑdreɪt
, ˈkwädrət, ˈkwɑdrət
/
1 (also quadrate bone) Zoology (in the skull of a bird or reptile) a squarish bone with which the jaw articulates, thought to be homologous with the incus of the middle ear in mammals.
▸ adjective /ˈkwädrət, ˈkwɑdrət
/ roughly square or rectangular:
a broad shell with a quadrate outline.
– ORIGIN late Middle English (as an adjective): from Latin quadrat- ‘made square’, from the verb quadrare, from quattuor ‘four’.