Anat. [L.: see QUADRATE sb.1 and a.] A quadrate muscle. Quadratus femoris, lumborum, etc. (see QUADRATE a. 1 c).
1727–41. Chambers, Cycl., Quadratus … a name applied to several muscles, in respect of their square figure; as the palmaris, and pronators.
1756. Winslow, Anat. (ed. 4), I. 211. A tendon … inserted between the Gemelli and Quadratus.
1843. J. G. Wilkinson, Swedenborg’s Anim. Kingd., I. ii. 60. Some of the before mentioned muscles: these are the triangulares and quadratus.
1870. Rolleston, Anim. Life, 3. The two psoas muscles and the quadratus lumborum.
