a·cro·mi·on

[uh-kroh-mee-uhn]
noun, plural a·cro·mi·a [uh-kroh-mee-uh] . Anatomy.
the outward end of the spine of the scapula or shoulder blade.

Origin:
1605–15; < Neo-Latin < Greek akrṓmion, equivalent to akro- acro- + ṓm(os) shoulder + -ion noun suffix

a·cro·mi·al, adjective
sub·a·cro·mi·al, adjective
su·per·a·cro·mi·al, adjective
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World English Dictionary
acromion (əˈkrəʊmɪən) [Click for IPA pronunciation guide]
 
n , pl -mia
the outermost edge of the spine of the shoulder blade
 
[C17: New Latin, from Greek akrōmion the point of the shoulder, from acro- + ōmion, diminutive of ōmos shoulder]

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00:10
acromion is always a great word to know.
So is flibbertigibbet. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a chattering or flighty, light-headed person.
American Heritage
Medical Dictionary

acromion a·cro·mi·on (ə-krō'mē-ŏn', -ən)
n.
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.

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