Definition of turritella
1 capitalized : a genus (the type of the family Turritellidae) of marine gastropod mollusks having an elongated turreted shell composed of many whorls with a rounded aperture and a horny multispiral operculum
2 less commonly turritellid \-lə̇d\ plural -s : any mollusk or shell of the genus Turritella or family Turritellidae — see screw shell
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Origin and Etymology of turritella
New Latin, irregular from Latin turris + New Latin -ella
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