QUADRATE

I. adjective Etymology: Middle English, from Latin quadratus, past participle of quadrare to make square, fit, from quadrum square; akin to Latin quattuor four Date: 14th century being square or approximately square, expanded into a square at the junction of the arms, of, relating to, or constituting a bony or cartilaginous element of each side of the skull to which the lower jaw is articulated in most vertebrates below mammals, II. noun Date: 15th century an approximately square or cubical area, space, or body, a ~ bone