An Etymological Dictionary of Astronomy and Astrophysics

1. To roll or wind together.
   

2. To bring about a → convolution.

Etymology (EN): From L. convolvere “to roll together,” from → com- “together” + volvere “to roll, turn,” PIE base *wel- “to turn, revolve;” cf. Skt. valati
“he turns,” ulba- “womb, vulva,” Gk. eilyein “to roll, wrap, fold.”

Etymology (PE): Hamâgiš, from ham- “together”, → com-, + âgišidan “to entwine, to twist” (Dehxodâ), from Mid.Pers. gyš- “to bind, tie,” hangyš- “to fasten to;” cf. Sogd. patigyš- “to imprison, confine;” Proto-Ir. *kaš- “to imprison” (Cheung 2007).