abactinal

形容词 adj.
中文释义
美 /æˈbæk.tə.nl̩/|/ˈæˌbæk.tə.nl̩/|/ˌæˌbækˈtaɪ.nl̩/|/ˈæˌbækˌtaɪ.nl̩/

英文释义

形容词 adj.
  1. 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.

词源

Etymology tree
English ab-
English actinal
English abactinal
From ab- + actinal.
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