Relating to both the clavicle and the deltoid muscle of the shoulder.
From Latin clavis (clavicle) + deltoid (from Greek delta, the triangular letter, referring to the deltoid muscle's shape). A compound anatomical term for muscles or structures connecting these two areas.
The deltoid muscle got its name because it's shaped like the Greek letter delta (Δ)—a triangle. So 'clavodeltoid' is describing something where an ancient key-shaped bone meets a triangle-shaped muscle. Ancient anatomists loved geometric metaphors!
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