Aptera

Aptera (n.)
definition: Insects without wings
Constituting the seventh Linnaen order of insects an artificial group which included Crustacea spiders centipeds and even worms. These animals are now placed in several distinct classes and orders.
Aptera is a 6 letter word that begins with an A and ends in an A

Apteral (a.)
definition: Apterous.

Apteral is a 7 letter word that begins with an A and ends in an L

Apteral (a.)
definition: Without lateral columns; -- applied to buildings which have no series of columns along their sides
But are either prostyle or amphiprostyle and opposed to peripteral.
Apteral is a 7 letter word that begins with an A and ends in an L

Apteran (n.)
definition: One of the Aptera.

Apteran is a 7 letter word that begins with an A and ends in an N

 1