sesquicentennial

NOUN /,sɛskwɪsɛn'tɛniəl/
16 LETTERS · 6 SYLLABLES · STARTS WITH S

sesquicentennial is a valid 16-letter word worth 27 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1E1S1Q10U1I1C3E1N1T1E1N1N1I1A1L1
1 + 1 + 1 + 10 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =27 PTS
DOUBLE WORD → 54TRIPLE WORD → 81
MEANING

What does sesquicentennial mean?

NOUN · 1 SENSE
1

The 150th anniversary (or the celebration of it).