Definition of subdeltoid in US English:

subdeltoid

adjective

  • 1Chiefly Botany. Nearly or approximately deltoid in shape.

  • 2Anatomy. Located beneath the deltoid muscle.

Origin

Early 19th century; earliest use found in Amos Eaton (1776–1842). From sub- + deltoid.

Pronunciation

subdeltoid

/ˌsʌbˈdɛltɔɪd/