Last Updated：2025/11/28
Any species of Pleurotomaria, a genus of pearly spiral gastropod shells having a deep slit in the outer lip. Many fossil species are known, and a few living ones are found in deep water in tropical seas.
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slit-shell
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Source Word
slit-shell
Noun
Japanese Meaning
外側の縁に深い切れ目がある、真珠光沢を持つ螺旋状の貝殻。Pleurotomaria属に属し、化石種が豊富で、一部は熱帯の深海にも現生する軟体動物の殻
（ plural ）
