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Webster 1913 Edition
Cyatholith
Cy-ath′olith
(s?-?th′?-l?th)
, Noun.
[Gr.
κύαθοσ
a cup + -lith
.] (Biol.)
A kind of coccolith, which in shape resembles a minute cup widened at the top, and varies in size from 1⁄6000 to 1⁄8000 of an inch.