factor x

NOUN
8 LETTERS · STARTS WITH F

factor x is a valid 8-letter word worth 19 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
F4A1C3T1O1R1X8
4 + 1 + 3 + 1 + 1 + 1 + 0 + 8 =19 PTS
DOUBLE WORD → 38TRIPLE WORD → 57
MEANING

What does factor x mean?

NOUN · 1 SENSE
1

Coagulation factor that is converted to an enzyme that converts prothrombin to thrombin in a reaction that depends on calcium ions and other coagulation factors.