abdominal

Etymology

First attested in 1746. From New Latin abdōminālis, from Latin abdōmen. Equivalent to abdomen + -al. Compare French abdominal.

adj

  1. Of or pertaining to the abdomen; ventral.
    abdominal muscles
    abdominal cavity
  2. (ichthyology) Having the ventral fins under the abdomen and behind the pectoral fins.
  3. (ichthyology) Ventral, in describing a fin.
  4. (zoology, obsolete) Belonging to the order Abdominales of fish.

noun

  1. (zoology, obsolete) A fish of the order Abdominales.
  2. (colloquial, usually plural only) An abdominal muscle.

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