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[uh-kroh-mee-uh n] /əˈkroʊ mi ən/
noun, plural acromia
[uh-kroh-mee-uh] /əˈkroʊ mi ə/ (Show IPA).
the outward end of the spine of the scapula or shoulder blade.
Origin of acromion
1605-15; < New Latin < Greek akrṓmion, equivalent to akro- acro- + ṓm(os) shoulder + -ion noun suffix
Related forms
acromial, adjective
subacromial, adjective
superacromial, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for subacromial


noun (pl) -mia (-mɪə)
the outermost edge of the spine of the shoulder blade
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
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subacromial in Medicine

acromion a·cro·mi·on (ə-krō'mē-ŏn', -ən)
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. Also called acromial process.

a·cro'mi·al adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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