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Webster 1913 Edition
Turritella
Turˊri-tel′la
,Noun.
[NL., dim fr. L.
turris
tower.] (Zool.)
Any spiral marine gastropod belonging to
Turritella
and allied genera. These mollusks have an elongated, turreted shell, composed of many whorls. They have a rounded aperture, and a horny multispiral operculum.