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acromion

[uh-kroh-mee-uh n]
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noun, plural a·cro·mi·a [uh-kroh-mee-uh] /əˈkroʊ mi ə/. Anatomy.
  1. the outward end of the spine of the scapula or shoulder blade.
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Origin of acromion

1605–15; < New Latin < Greek akrṓmion, equivalent to akro- acro- + ṓm(os) shoulder + -ion noun suffix
Related formsa·cro·mi·al, adjectivesub·a·cro·mi·al, adjectivesu·per·a·cro·mi·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for subacromial

acromion

noun plural -mia (-mɪə)
  1. the outermost edge of the spine of the shoulder blade
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Word Origin

C17: New Latin, from Greek akrōmion the point of the shoulder, from acro- + ōmion, diminutive of ōmos shoulder
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

subacromial in Medicine

acromion

(ə-krōmē-ŏn′, -ən)
n.
  1. The outer end of the scapula, extending over the shoulder joint and forming the highest point of the shoulder, to which the collarbone is attached.acromial process
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Related formsa•cromi•al adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.