Apter

Part of speech: adjective

Definitions

1. A descriptor for a biological component that is characterized by the absence of wings or wing-like features
2. Describing an organism or part that naturally has no wings or wing-like appendages
3. Applied to a species or anatomical feature that does not develop wings at any stage

Etymology: The word "apter" is simply the comparative of "apt," so its real interest lies in the root it shares with "apt." That root is the Latin "aptus," meaning "fitted" or "fastened together," from the verb "apere," to fasten or join. Its deeper ancestry is uncertain, with scholars linking it to Greek "haptein," to fasten, and to Sanskrit "apta," meaning "fit." Notice that "apt" in the sense of "suitable" and "apter" in the sense of "more suitable" have nothing to do with wings. The word "apterous" is the one that means "having no wings," from Greek "apteros," with the prefix "a-" meaning "without" and "pteron," meaning "wing." Under that Greek root sits the ordinary word "apt," which shows how two words can share a sound while keeping quite different histories.