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n.1.(Anat.) A cuplike cavity or organ. Same as Acetabulum.
References in periodicals archive ?
It resembles the ulna in Pygochelidon [cyanoleuca] and Notiochelidon [murina] rather than in any species of Tachycineta, Petrochelidon, or Hirundo by this combination of characters: olecranon stouter in lateral aspect; cotyla dorsalis with greater overhang of corpus ulnae; and tuberculum carpale more tapered (less squared) in dorsal or ventral aspects.