a. rare. [f. Gr. ἄπτερ-ος wingless (f. ἀ priv. + πτερ-όν wing) + -AL 1.]
1. Wingless; in Zool. = APTEROUS.
1833. Elgin Marb., II. 60. Marbles from the Temple of apteral Victory.
2. Arch. Having no columns along the sides.
1834. Penny Cycl., II. 199/2. Our modern churches which have porticoes are generally, illustrations of the apteral arrangement.