筋きん肉にく

き

ん

に

く

Common wordJLPTN3Freq.FrequencyTop 5,000

Meanings

1

noun

General term for muscle tissue; used in anatomy, fitness, and everyday contexts.

筋すじ
筋 refers to a line, fiber, or tendon, and can also mean muscle in a more anatomical or figurative sense, but 筋肉 is the standard word for muscle as body tissue.
筋きん肉にく質しつ
筋肉質 is a noun or na-adjective meaning 'muscular build' or 'muscular quality', while 筋肉 is the muscle itself.

Compound of 筋 (きん, 'sinew, muscle') and 肉 (にく, 'flesh'). The reading is on'yomi, and the word is a straightforward Sino-Japanese term for muscle.