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the outward end of the spine of the scapula or shoulder blade.
historical examples

in armadillos, sloths, and megatheriidae, the acromion is very long and the clavicle is well developed.
the vertebrate skeleton sidney h. reynolds

it has no acromion, which is usually though not always absent in ungulates.
the cambridge natural history, vol x., mammalia frank evers beddard

fractures of the scapula may implicate the body, the surgical neck, the acromion, or the coracoid process.
manual of surgery volume second: extremities–head–neck. sixth edition. alexander miles

in the scapula the acromion joins the coracoid as in bradypus; the clavicle is large.
the cambridge natural history, vol x., mammalia frank evers beddard

the acromion and coracoid processes of the scapula are rudimentary.
encyclopaedia britannica, 11th edition, volume 5, slice 7 various

an ally of the present animal, for instance, the hippopotamus, has the acromion developed.
the cambridge natural history, vol x., mammalia frank evers beddard

as in other american edentates, the acromion joins the coracoid.
the cambridge natural history, vol x., mammalia frank evers beddard

it is a remarkable fact that the acromion is joined to the rest of the spine of the scapula by a joint.
the cambridge natural history, vol x., mammalia frank evers beddard

the tip of the acromion is usually employed as a fixed point in measuring the length of the upper arm.
manual of surgery volume second: extremities–head–neck. sixth edition. alexander miles

i saw grooving of the crest of the spine, but never happened to meet with a fracture of the acromion process.
surgical experiences in south africa, 1899-1900 george henry makins

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

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.