particularise

VERB /pər'tɪkjələ,raɪz/
13 LETTERS · 5 SYLLABLES · STARTS WITH P

particularise is a valid 13-letter word worth 17 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3A1R1T1I1C3U1L1A1R1I1S1E1
3 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =17 PTS
DOUBLE WORD → 34TRIPLE WORD → 51
MEANING

What does particularise mean?