spiny; spinous.
resembling a spine; spiny

acanthoid a·can·thoid (ə-kān’thoid’)
Shaped like a thorn or spine.


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  • Acanthology

    the study of spines, as in sea urchins or certain spiny-headed worms, particularly as they relate to taxonomic classification. noun the scientific study of spines Word Origin Greek ‘thorn’

  • Acantholysis

    acantholysis acantholysis ac·an·thol·y·sis (āk’ān-thŏl’ĭ-sĭs, āk’ən-) n. pl. ac·an·thol·y·ses (-sēz’) Separation of individual prickle cells from their neighbors, as in keratosis follicularis.

  • Acanthoma

    acanthoma acanthoma ac·an·tho·ma (āk’ān-thō’mə, āk’ən-) n. pl. ac·an·tho·mas or ac·an·tho·ma·ta (-mə-tə) A tumor composed of epidermal squamous cells.

  • Acanthopterygian

    belonging or pertaining to the Acanthopterygii (Acanthopteri), the group of spiny-finned fishes, including the bass and perch. an acanthopterygian fish. Historical Examples acanthopterygian, ak-an-thop-tėr-ij′i-an, adj. having spiny fins. Chambers’s Twentieth Century Dictionary (part 1 of 4: A-D) Various adjective of, relating to, or belonging to the Acanthopterygii, a large group of teleost fishes having spiny […]

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