(zoology) That lacks limbs, fins or wings.

(zoology) Complete absence of wings.

Any insect of the order Apterygota.

plural of apteran

(zoology) Any of the Aptera, an obsolete taxonomic category of wingless arthropods.

Alternative form of apterous

(pharmacology) A discontinued drug with neuroprotective effects but undesirable side effects.

(obsolete) Capable of being adapted.

(pharmacology) A tetracyclic antidepressant evaluated in the 1980s but never marketed.

(zoology) apterous, wingless / (architecture) Without lateral columns; applied to buildings which have no series of columns along their sides, but are either prostyle or amphiprostyle.