ABACTINAL

abactinal

(adjective) (of radiate animals) located on the surface or end opposite to that on which the mouth is situated

Source: WordNet® 3.1


Etymology

Adjective

abactinal (comparative more abactinal, superlative most abactinal)

(zoology) Pertaining to the surface or end opposite to the mouth in a radiate animal.

Antonym: actinal

Source: Wiktionary


Ab*ac"ti*nal, a. Etym: [L. ab + E. actinal.] (Zoöl.)

Definition: Pertaining to the surface or end opposite to the mouth in a radiate animal; -- opposed to actinal. "The aboral or abactinal area." L. Agassiz.

Source: Webster’s Unabridged Dictionary 1913 Edition



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