Definition of univalve in English:


Line breaks: uni|valve
Pronunciation: /ˈjuːnɪvalv


  • Having one valve or shell.
    More example sentences
    • In the earliest Cambrian, one lineage developed a bivalved mineralized shell (Fordilla and its relatives), the other an endogastric univalve shell (the Helcionellids).
    • Vetustovermis bears a number of morphological features that are found in Kimberella, which has been interpreted to have a non-mineralized but stiff univalve shell.


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  • another term for gastropod.
    More example sentences
    • Thus, all rostroconches and some helcionellacean univalves technically become stem group bivalves.
    • Now explain how a univalve differs from a bivalve, in more ways than just the number of shells.
    • But who speaks out for the univalve and the bivalve?

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