D defs.my
Entry 2 senses Webster, 1913

Apterous

· Ap·ter·ous · IPA /ˈæptərəs/
01 a. Destitute of wings; apteral; as, apterous insects.
  1. 1.
    Destitute of wings; apteral; as, apterous insects.(Zool.)
  2. 2.
    Destitute of winglike membranous expansions, as a stem or petiole; -- opposed to alate.(Bot.)