英语词汇pentad的起源、历史背景-英语词源词典

词汇	pentad
词源	pentad n. "set of five things considered together," 1650s, from Greek pentas (genitive pentados) "the number five, a group of five," from PIE root penkwe- "five." Meaning "period of five years" is from 1880; meaning "period of five days" is from 1906, originally in meteorology. Entries linking to pentad* *penkwe- Proto-Indo-European root meaning "five." It forms all or part of: cinquain; cinque; cinquecento; cinquefoil; fifteen; fifth; fifty; fin (n.) "five-dollar bill;" finger; fist; five; foist; keno; parcheesi; penta-; pentacle; pentad; Pentateuch; Pentecost; pentagon; pentagram; pentameter; pentathlon; Pentothal; Pompeii; Punjab; punch (n.2) "type of mixed drink;" quinary; quincunx; quinella; quinque-; quinquennial; quint; quintain; quintet; quintile; quintessence; quintillion; quintuple. It is the hypothetical source of/evidence for its existence is provided by: Sanskrit panca, Greek pente, Latin quinque, Old Church Slavonic pęti, Lithuanian penki, Old Welsh pimp, Old English fif, Dutch vijf, Old High German funf. updated on March 21, 2020
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pentad n.