Transmit  v. (-tt-) 1 a pass or hand on; transfer (transmitted the message; how diseases are transmitted). B communicate (ideas, emotions, etc.). 2 a allow (heat, light, sound, electricity, etc.) To pass through. B be a medium for (ideas, emotions, etc.) (his message transmits hope). 3 broadcast (a radio or television programme).  transmissible adj. Transmittable adj. [latin mitto miss- send]