Definition of deltoid in English:

deltoid

Line breaks: del|toid
Pronunciation: /ˈdɛltɔɪd
 
/

adjective

technical
  • Triangular: a tree with large deltoid leaves
    More example sentences
    • In some cases, the deltoid branch of the profunda brachii (16% of individuals) arises from the brachial or from the superior ulnar collateral.
    • Farther distally around the middle part of the shaft, is the deltoid tuberosity along the lateral border.
    • Specimens are members of the Hyperoblastidae based on presence of four spiracles and anispiracle, deltoid crests (not faces), and two to four anideltoids.

noun

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  • 1 (also deltoid muscle) A thick triangular muscle covering the shoulder joint and used for raising the arm away from the body.
    More example sentences
    • During surgery, we observed partial or complete detachment of the trapezoid and deltoid muscles from the lateral clavicle in all patients.
    • Performed with or without assistance, pull-ups are a great way to strengthen the muscles of the upper body, particularly the latissimus dorsi, posterior deltoids and biceps.
    • Strength training targeted 5 muscle groups (latissimus dorsi, pectorals, triceps / deltoid, hamstrings, and quadriceps).
  • 1.1Each of the three parts of a deltoid muscle, attached at the front, side, and rear of the shoulder: the anterior deltoid
    More example sentences
    • One key to shoulder training is to think of your front, side and rear deltoids as distinct (but small) muscles.
    • The rear deltoid, teres minor and infraspinatus are responsible.
    • The heavier you can go with your bench-press sets, the better for your pectorals, anterior deltoids and triceps, provided their work is not being stolen by cheating.

Origin

mid 18th century: from French deltoïde, or via modern Latin from Greek deltoeidēs.

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