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Entry 2 senses · 2 variants Webster, 1913

Opercular

· O·per·cu·lar · IPA
01 a. Of, pertaining to, or like, an operculum.
  1. 1.
    Of, pertaining to, or like, an operculum.
02 n. The principal opercular bone or operculum of fishes.
  1. 1.
    The principal opercular bone or operculum of fishes.(Anat.)