callum definition

  • noun:
    • in burrowing pelecypod mollusk Pholas, a calcareous septum released following the completion for the burrow and occupying the pedal gape associated with the valves.
    • within the burrowing pelecypod mollusk Pholas, a calcareous septum released following the completion associated with burrow and occupying the pedal gape associated with valves.

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