Definition of Acromion

Acromion: The projection of the scapula (the shoulder blade) that forms the point of the shoulder.
The acromion is part of the scapula. It protrudes laterally (away from the midline) and is triangular in shape.
The top of the shoulder is acromial. The word "acromion" comes from the Greek "akron", peak + "omos", shoulder = the peak of the shoulder.

Definition of AC

AC: Abbreviation for a.c. (ante cibum on a prescription); acromioclavicular (shoulder joint); antecubital (crook of elbow).