n. pl. bra·chi·a (brākē-ə, brăkē-ə) 1. The part of the upper arm or forelimb extending from the shoulder to the elbow. 2. An arm or a homologous anatomical structure, such as a flipper or wing. 3. The part of a limb or process corresponding to an arm. [Latin brācchium, arm, from Greek brakhīōn, upper arm; see mregh-u- in the Appendix of Indo-European roots.] |
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