pentad

英式音标：pentad怎么读

美式音标：pentad怎么读

pentad词义

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n. 五；五个一组；五年间；五价物


pentad英文词源

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pentad (n.)
1650s, from Greek pentas (genitive pentados) "group of five" (see five). Meaning "period of five years" is from 1880; meaning "period of five days" is from 1906, originally in meteorology.