英语词汇sigma的起源、历史背景-英语词源词典

词汇	sigma
词源	sigma 18th letter of the Greek alphabet, corresponding to Latin S; the name is a metathesis of Hebrew samekh. In uncial writing, shaped like an S or a C. Entries linking to sigma sigmatism n. 1888, "lisping difficulty in pronouncing 'S,'" from combining form of sigma + -ism. As "use or recurrence of 'S'" from 1889. Also sigmatismus. sigmoid adj. "shaped like the Greek letter sigma" in one of its forms, hence either "shaped like a C" (1660s) or "shaped like an S" (1786). From sigma (q.v.) + -oid. Especially of the flexure of the colon (1891). Related: Sigmoidal; sigmoidally. updated on October 07, 2022
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英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。

sigma