deltoid

/'deltɔid/

Thân thiện

The athlete flexes his deltoid in the mirror.

Definition

1. Adjective:

   • Triangular in shape: Resembling the shape of the Greek letter delta (Δ), which is an equilateral triangle.
   • Suggesting a capital delta: Having a broad base and a pointed apex, similar to the geometric form.

2. Noun:

   • A large triangular muscle: A thick, triangular muscle that covers the shoulder joint, responsible for moving the arm away from the body (abduction), as well as flexing, extending, and rotating the arm.

Examples of Usage

• Adjective:

  • The geologist pointed out the deltoid shape of the river delta on the map.
  • The kite had a simple, deltoid form.

• Noun:

  • He injured his deltoid while lifting weights.
  • Strengthening the deltoid is important for shoulder stability and a wide range of arm movements.

Advanced Usage

• "Deltoid ligament": A strong, triangular ligament on the inner side of the ankle joint.
  • A sprain of the deltoid ligament is less common than an inversion ankle sprain.

Variants and Related Words

• Deltoideus: An alternative anatomical name for the deltoid muscle.
  • The deltoideus is divided into anterior, middle, and posterior fibers.

Synonyms

• Triangular (adj): Having three sides and three angles.
• Shoulder muscle (n): A general term for muscles in the shoulder region, though not specific to the deltoid.

Related Phrases

• Deltoid tuberosity: A rough, V-shaped area on the humerus (upper arm bone) where the deltoid muscle attaches.
  • The deltoid tuberosity is a key landmark for the muscle's insertion.

Học thuật

Adjective

1. triangular or suggesting a capital delta, with a point at the apex

Noun

1. a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm

Từ đồng nghĩa

• deltoid muscle
• musculus deltoideus