Look up: pentad

1. 
   Pentad
   A period of 5 days. See also: Time.
   Found on http://www.diracdelta.co.uk/science/sour
   
   
2. 
   pentad
   a ring counter with five stages Category: Electrical engineering and energy • period of five consecutive days sometimes used in the study of one or several meteorological elements. Category: The cosmos
   Found on http://www.mijnwoordenboek.nl/definition
   
   
3. 
   Pentad
   Pen'tad noun [ Greek ..., ..., a body of five, from ... five.] (Chemistry) Any element, atom, or radical, having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds.
   Found on http://www.encyclo.co.uk/webster/P/48
   
   
4. 
   Pentad
   Pen'tad adjective (Chemistry) Having the valence of a pentad.
   Found on http://www.encyclo.co.uk/webster/P/48
   
   
5. 
   pentad
   <chemistry> Any element, atom, or radical, having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds. ... Origin: Gr, a body of five, fr. Five. ... <chemistry> Having the valence of a pentad. ... Source: Websters Dict ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
6. 
   Pentad
   The `pentad`, was used by the Pythagoreans as a secret sign to recognize each other. It represents the number five, life, power and invulnerability. Nicomachus explored the mathematical characteristics of the pentad as related to the Pythagorean saying `Justice is five`.
   Found on http://en.wikipedia.org/wiki/Pentad
   
   
7. 
   Pentad
   • (a.) Having the valence of a pentad. • (n.) Any element, atom, or radical, having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds.
   Found on http://thinkexist.com/dictionary/meaning
   
   
8. 
   pentad
   a unit of quantity equal to 5.
   Found on http://www.unc.edu/~rowlett/units/dictP.
   
   
9. 
   pentad
   a unit of time equal to 5 days. This unit is common in meteorology, where forecasts are frequently made for periods of 5 days at a time.
   Found on http://www.unc.edu/~rowlett/units/dictP.