Category:Deltoid

Del"toid, a. Etym: [Gr. deltoeidh`s delta-shaped; de`lta the name of the letter ei^dos form: cf. F. deltoïde. See Delta.]

Defn: Shaped like the Greek Deltoid leaf (Bot.), a leaf in the form of a triangle with the stem inserted at the middle of the base. -- Deltoid muscle (Anat.), a triangular muscle in the shoulder which serves to move the arm directly upward.