pronator Anat.
(prəʊˈneɪtə(r))
[a. med.L. prōnātor, agent-n. f. prōnāre: see pronate v. Cf. F. pronateur (16th c. in Littré).]
A muscle that effects or assists in pronation; spec. one of two muscles of the fore limb, pronator (radii) teres and pronator (radii) quadratus. Also attrib. (Opposed to supinator.)
| [1693 tr. Blancard's Phys. Dict. (ed. 2), Pronatores Musculi, one is round, the other foursquare, both move the Radius.] 1727–41 Chambers Cycl. s.v. Pronation, There are peculiar muscles whereby the pronation is effected called pronators. 1770 Pennant in Phil. Trans. LX. 323 The tendinous muscles..have much the same effect on the tail as the supinator and pronators have in turning the hand. 1826 Kirby & Sp. Entomol. IV. xliii. 172 At first it may seem that insects..cannot have the Supinator and Pronator muscles; but some muscle of this kind must be..in those that have a versatile head. 1872 Mivart Anat. 294 The muscles of the fore-arm consist of pronators and supinators, flexors and extensors. |