deltoid
adj.
1741, in deltoid muscle, so called for its shape, from Greek deltoeides "triangular," literally "shaped like the letter delta;" see delta + -oid.
| 词汇 | deltoid | 
| 词根词缀 | Online Etymology Dictionary deltoid adj. 1741, in deltoid muscle, so called for its shape, from Greek deltoeides "triangular," literally "shaped like the letter delta;" see delta + -oid. | 
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