transmittal

Concise Oxford English Dictionary © 2008 Oxford University Press:
transmit/transˈmɪt/

▶verb (transmits, transmitting, transmitted)

• 1 cause to pass on from one place or person to another.

  ■ communicate (an idea or emotion).

• 2 broadcast or send out (an electrical signal or a radio or television programme).

• 3 allow (heat, light, etc.) to pass through a medium.

– derivatives
transmissive adjective,
transmissivity noun (Physics),
transmittable adjective,
transmittal noun.

– origin ME: from L. transmittere, from trans- ‘across’ + mittere ‘send’.