Deltoid

Pronunciation

• UK IPA: /ˈdɛɫtɔɪd/

Origin

From deltoideus, which was in turn from Ancient Greek adjective δελτοειδής. See also: δέλτα (delta) the fourth letter of the Greek alphabet.

Full definition of deltoid

Noun

1. The deltoid muscle, a triangular muscle on the human shoulder.
2. The deltoid ligament, a triangular ligament on the human ankle.

Adjective

1. In the shape of the upper case Greek letter delta Δ; triangular.
2. Of, or connected with the deltoid muscle
3. (botany, of leaves) Of a triangular or roughly triangular shape and attached to the stem via the side.

Derived terms

• obdeltoid
• delt
  delts
• deltoid muscle
  deltoid muscles