quadrate
Concise Oxford English Dictionary © 2008 Oxford University Press:
quadrate
▶noun /ˈkwɒdrət/ (also quadrate bone) Zoology a squarish bone in the skull of a bird or reptile, with which the jaw articulates. ▶adjective /ˈkwɒdrət/ roughly square or rectangular. ▶verb /kwɒˈdreɪt, ˈkwɒdreɪt/ (usu. quadrate with) archaic conform.
– origin ME: from L. quadrat-, quadrare ‘make square’, from quattuor ‘four’.
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