PENTAD
Here are the details, including the meaning, point value, and more about the Scrabble word PENTAD. Below
pentad is worth 11 points in the game of Scrabble
Definitions for the word, 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.