pentad en · NOUN
Pronunciation
- (Southern-England) audio
- /ˈpɛnˌtæd/ (General-American)
- /ˈpɛntad/ (Received-Pronunciation)
Etymology
From Ancient Greek πεντάς (pentás), from πέντε (pénte, “five”) + -άς (-ás, “-ad”). By surface analysis, pent- + -ad.
Meanings
- 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.
- Synonym of quintet: A group of five things, particularly ▸ A five-day period, especially a temperature average taken every five days.
- Synonym of quintet: A group of five things, particularly ▸ A five-day division of the Chinese calendar, forming part of a solar term (Chinese: 候).
-
Synonym of quintet: A group of five things, particularly ▸ A pentavalent element or group: an atom or molecule with a valence of five, comparable with five atoms of hydrogen.
Nitrogen is a pentad in the ammonium compounds.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| pentads | Number=Plur | lexicographic |
Deriveds
Synonyms
Translations (4)
fi viisikko (group of five things — see also quintet) · bg петорка (group of five things — see also quintet) · fi hou (five-day division of the Chinese calendar) · fi viisivuotiskausi (five-year period)