diatomaceous earth

NOUN /,daɪətə'meɪʃəs_ɜrθ/
18 LETTERS · 5 SYLLABLES · STARTS WITH D

diatomaceous earth is a valid 18-letter word worth 25 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
D2I1A1T1O1M3A1C3E1O1U1S1E1A1R1T1H4
2 + 1 + 1 + 1 + 1 + 3 + 1 + 3 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 4 =25 PTS
DOUBLE WORD → 50TRIPLE WORD → 75
MEANING

What does diatomaceous earth mean?

NOUN · 1 SENSE
1

A light soil consisting of siliceous diatom remains and often used as a filtering material.