one of the featherless portions of the skin of a bird.
Zoology. wingless, as some insects. Botany. without membranous expansions, as a stem. Historical Examples Male and female larv similar, apterous, naked or covered, active. An Account of the Insects Noxious to Agriculture and Plants in New Zealand W. M. Maskell Why it is, in the Insecta, that islands should predispose to an apterous state more […]
having no wings, fins, or limbs, as snakes and eels. adjective (of eels, certain insects, etc) lacking such paired limbs as wings or fins
belonging or pertaining to the Apterygota, a subclass of primitive wingless insects that undergo little or no metamorphosis.
(def 1). Historical Examples When all other class distinctions are abolished, this one will remain, like the bones of the apteryx. When Ghost Meets Ghost William Frend De Morgan The New Zealand “kiwi,” known to naturalists as the apteryx. In Search of the Castaways Jules Verne The wings of the apteryx are literally rudiments; a […]