pentad

== English == === Etymology === From Ancient Greek πεντάς (pentás), from πέντε (pénte, “five”) + -άς (-ás, “-ad”). By surface analysis, pent- +‎ -ad. === Pronunciation === (General American) IPA(key): /ˈpɛnˌtæd/ (Received Pronunciation) IPA(key): /ˈpɛntad/ Hyphenation: pen‧tad === Noun === pentad (plural pentads) Synonym of quintet: A group of five things, particularly Synonym of quinquennium: a five-year period, especially in reference to the first and second halves of calendrical decades. (climatology) A five-day period, especially a temperature average taken every five days. A five-day division of the Chinese calendar, forming part of a solar term (Chinese: 候). (chemistry) A pentavalent element or group: an atom or molecule with a valence of five, comparable with five atoms of hydrogen. ==== Coordinate terms ==== (group) monad, duad/dyad, triad, tetrad, pentad, hexad, hebdomad/heptad, ogdoad/octad, ennead/nonad, decad/decade, hendecad, dodecad/duodecade, chiliad ==== Derived terms ==== pentadic Reynolds' pentad ==== Translations ==== === References === “pentad, n.”, in OED Online ⁠, Oxford: Oxford University Press, 2022. === Anagrams === panted, pedant == Haitian Creole == === Etymology === From French pintade. === Pronunciation === IPA(key): /pɛ̃tad/ === Noun === pentad guinea fowl (figurative) shy and cowardly (person) ==== Derived terms ==== pentadin === References === Targète, Jean; Urciolo, Raphael (1993), Haitian Creole-English Dictionary‎[1], Dunwoody Press, →ISBN, page 147