tertium quid

NOUN
12 LETTERS · 3 SYLLABLES · STARTS WITH T

tertium quid is a valid 12-letter word worth 23 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
T1E1R1T1I1U1M3Q10U1I1D2
1 + 1 + 1 + 1 + 1 + 1 + 3 + 0 + 10 + 1 + 1 + 2 =23 PTS
DOUBLE WORD → 46TRIPLE WORD → 69
MEANING

What does tertium quid mean?

NOUN · 1 SENSE
1

Some third thing similar to two opposites but distinct from both.