inaudible[in ôd′ə bəl]
A dog whistle is inaudible to the human ear.
The definition of inaudible is something that can't be heard.
An example of something inaudible is a dog whistle to a human.
not audible; that cannot be heard
Origin of inaudibleLate Latin inaudibilis
Impossible to hear: an inaudible conversation.
in- + audible