selenizone

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noun

An anatomical structure in the shells of some families of sea snails, consisting of a spiral band of growth lines on the shell surface.

Scrabble 19
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Meanings

nounselenizone (plural selenizones)

plural selenizones

  1. An anatomical structure in the shells of some families of sea snails, consisting of a spiral band of growth lines on the shell surface.

    The shapes are quite similar to the shape in Tapinotomaria, but their flat to convex selenizones are placed higher on the whorls and are located in the central portion of vertical whorl faces.

    1958, Ellis Leon Yochelson, Permian Gastropoda of the southwestern United States
Cite this entry
APA

selenizone. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/selenizone

MLA

“selenizone.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/selenizone. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “selenizone,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/selenizone.

Source: selenizone on Wiktionary, CC BY-SA 4.0.