acanthion acan·thi·on (ə-kān’thē-ŏn’, -thē-ən)
the tip of the anterior nasal spine.

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  • Acanthocephala

    acanthocephala acanthocephala a·can·tho·ceph·a·la (ə-kān’thə-sěf’ə-lə) n. any of various worms of the phylum acanthocephala that live parasitically in the intestines of vertebrates and are characterized by a cylindrical, retractile proboscis that bears many rows of hooked spines. also called spiny-headed worm. a·can’tho·ceph’a·lan (-lən) or a·can’tho·ceph’a·lid (-lĭd) adj. historical examples the invertebrates: acanthocephala, aschelminthes, and endoprocta. the […]

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    any parasitic worm of the phylum or cl-ss acanthocephala, having a proboscis covered with recurved hooks. belonging or pertaining to the acanthocephala. noun any of the parasitic wormlike invertebrates of the phylum acanthocephala, the adults of which have a spiny proboscis and live in the intestines of vertebrates adjective of, relating to, or belonging to […]

  • Acanthocephaliasis

    acanthocephaliasis acanthocephaliasis a·can·tho·ceph·a·li·a·sis (ə-kān’thə-sěf’ə-lī’ə-sĭs) n. infection with a species of acanthocephala.

  • Acanthocheilonema

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