An Etymological Dictionary of Astronomy and Astrophysics

To make suitable to or fit for a specific use or situation.

Etymology (EN): From M.Fr. adapter, from L. adaptare “adjust,” from ad- “to” + aptare “join,” from aptus “fitted.”

Etymology (PE): Niyâvidan from Mid. Pers. niyâw “apt, suitable, appropriate” + -idan verb making suffix.