pentad

Meanings

1. Synonym of quintet: A group of five things, particularly
2. Synonym of quinquennium: a five-year period, especially in reference to the first and second halves of calendrical decades.
3. A five-day period, especially a temperature average taken every five days.
4. A five-day division of the Chinese calendar, forming part of a solar term (Chinese: 候).
5. A pentavalent element or group: an atom or molecule with a valence of five, comparable with five atoms of hydrogen.

Etymology

From Ancient Greek πεντάς (pentás), from πέντε (pénte, “five”) + -άς (-ás, “-ad”). By surface analysis, pent- + -ad.

Translations