deltoid

US /ˈdel.tɔɪd/
UK /ˈdel.tɔɪd/
"deltoid" picture
1.

三角筋

a large triangular muscle covering the shoulder joint, responsible for lifting the arm away from the body

:
He worked on his deltoids at the gym.
彼はジムで三角筋を鍛えた。
The injection was given into the deltoid muscle.
注射は三角筋に打たれた。
1.

三角筋の, 三角の

of or relating to the deltoid muscle; triangular

:
The artist sketched the prominent deltoid shape of the shoulder.
芸術家は肩の目立つ三角筋状の形をスケッチした。
The leaf had a distinct deltoid outline.
その葉は明確な三角筋状の輪郭を持っていた。