pentad

Tanımlar (İngilizce)

1. isim Synonym of quinquennium: a five-year period, especially in reference to the first and second halves of calendrical decades.
2. isim A five-day period, especially a temperature average taken every five days.
3. isim A five-day division of the Chinese calendar, forming part of a solar term (Chinese: 候).
4. isim 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.”