quaternion unit

15 LETTERS · STARTS WITH Q

quaternion unit is a valid 15-letter word worth 23 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

Q10U1A1T1E1R1N1I1O1N1U1N1I1T1

10 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does quaternion unit mean?