Aboral used in a sentence

Aboral in a sentence as an adjective

Org/wiki/Anatomical_terms_of_location Some of the terms: dorsal/ventral, proximal/distal, anterior/posterior, superior/inferior, oral/aboral, basal/apical When you're describing something like a microbe, the terms get fairly arbitrary; which is the "head" end of some little blobby thing?