ab·ac·ti·nal
| \ (ˈ)a-¦bak-tə-nᵊl, ¦a-ˌbak-¦tī-nᵊl \
Definition of abactinal
: of or relating to the surface or end opposite to the mouth in a radiate animal
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Time Traveler for abactinal
The first known use of abactinal was in 1857
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