Plural of acromion; the bony projections at the top and back of the shoulder blade that form part of the shoulder joint.
Plural of acromion from Greek 'akron' (peak) + 'omos' (shoulder). These anatomical points were named for their appearance as the 'peaks' of the shoulder structure.
Your acromia are the bony bumps you can feel at the top of your shoulders—they're literally the peaks of your shoulder blade, which is why they're called by such a pointy name!
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