abactinal

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abactinal

/æˈbæk.tə.nl̩/ US
/ˈæˌbæk.tə.nl̩/ US
/ˌæˌbækˈtaɪ.nl̩/ US
/ˈæˌbækˌtaɪ.nl̩/ US

adjective

Pertaining to the surface or end opposite to the mouth in a radiate animal. The so-called mouth is always placed at one end of these poles, and from it radiate the most prominent organs, in consequence of which I have called this side of the body the oral or actinal area, and the opposite side the aboral or abactinal area.
Opposite: actinal
Pertaining specifically to the echinoderm body, that part not bearing tube feet, in which appears the madreporite. This new species has very peculiar abactinal spines that form a hooked crown and can be compared with the robust, coarse abactinal spines of H. compacta, H. leviuscula, H. skorikovi.

Similar: abambulacral

Thesaurus

adjective

Similar: abambulacral

Translations

Every language

adj pertaining to the surface or end opposite to the mouth in a radiate animal

Português	abactinal

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MLA

"abactinal." Wiktionary, via Micwyn, micwyn.com/word/abactinal. Accessed 6 Nov. 2026.

APA

abactinal. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/abactinal

Chicago

"abactinal." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/abactinal.

BibTeX

@misc{abactinal_2026,
  title = {abactinal},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/abactinal},
  urldate = {2026-11-06}
}