sine qua non

NOUN /,sɪneɪ_kwɑ_'noʊn/
12 LETTERS · 2 SYLLABLES · STARTS WITH S

sine qua non is a valid 12-letter word worth 19 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1I1N1E1Q10U1A1N1O1N1
1 + 1 + 1 + 1 + 0 + 10 + 1 + 1 + 0 + 1 + 1 + 1 =19 PTS
DOUBLE WORD → 38TRIPLE WORD → 57
MEANING

What does sine qua non mean?

NOUN · 1 SENSE
1

A prerequisite.