[brey-kee-uh l, brak-ee-]Anatomy, Zoology
  1. belonging to the arm, foreleg, wing, pectoral fin, or other forelimb of a vertebrate.
  2. belonging to the upper part of such a member, from the shoulder to the elbow.
  3. armlike, as an appendage.
  1. a brachial part or structure.

Origin of brachial

First recorded in 1570–80, brachial is from the Latin word brāchiālis of, belonging to the arm. See brachi-, -al1
Related formsin·ter·bra·chi·al, adjectivepost·bra·chi·al, adjectivepre·bra·chi·al, adjectivepseu·do·bra·chi·al, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for brachial

Historical Examples of brachial

British Dictionary definitions for brachial


  1. of or relating to the arm or to an armlike part or structure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

brachial in Medicine


  1. Relating to the arm.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

brachial in Science


  1. Relating to or involving the arm.
  2. Relating to the forelimb or wing of a vertebrate.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.