deltoid Meaning, Definition & Usage

  1. noun a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm
    deltoid muscle; musculus deltoideus.
  2. adjective satellite triangular or suggesting a capital delta, with a point at the apex

WordNet

Del"toid adjective
Etymology
Gr. deltoeidh`s delta-shaped; de`lta the name of the letter ei^dos form: cf. F. deltoïde. See Delta.
Definitions
  1. Shaped like the Greek (delta); delta-shaped; triangular.

Webster 1913