notaeum definition

  • noun:
    • the rear or upper surface, by a bird.
    • the trunk or upper surface, as of a bird.
    • In ornithology, the complete upper area of a bird's trunk area: opposed to gastræum. See cut-under bird.
    • In conchology, a dorsal buckler, analogous to the mantle, developed in opisthobranchiate gastropods. In addition noteum.
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