unconditioned reflex

NOUN
20 LETTERS · STARTS WITH U

unconditioned reflex is a valid 20-letter word worth 33 points in Scrabble and 39 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
U1N1C3O1N1D2I1T1I1O1N1E1D2R1E1F4L1E1X8
1 + 1 + 3 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 4 + 1 + 1 + 8 =33 PTS
DOUBLE WORD → 66TRIPLE WORD → 99
MEANING

What does unconditioned reflex mean?