Synonyms for Transmittable:

adj.

catching (adjective)
infectious, communicable.
communicable (adjective)
contagious, catching.
contagious (adjective)
transmissible.
transferrable (adjective)
portable, transferrable, transportable, movable, conveyable.

n.

transmittable (noun)
contractable, catching, contagious, infectious, communicable, transmissible.

Other synonyms:

Other relevant words:
communicable, contagious, conveyable, catching, contractable, infectious, transmissible.