An Etymological Dictionary of Astronomy and Astrophysics

To cause (light, heat, sound, etc.) to pass through a medium.

Etymology (EN): M.E. transmitten, from
L. transmittere “send across, transfer, pass on,” from → trans- “across” + mittere “to send.”

Etymology (PE): Tarâgosilidan, infinitive of tarâgosli, from tarâ-→ trans- “across” + gosil “sending away, dismission,” variant gosi; Mid.Pers. wisé “to despatch” (Parthian Mid.Pers. wsys- “to despatch;” Buddhist Mid.Pers. wsydy “to despatch;” Sogdian ‘ns’yd- “to exhort”), from Proto-Iranian *vi-sid- “to despatch, send off,” from prefix vi- “apart, away, out,” + *sid- “to call.”