adjective, verb, -dyned, -dyn⋅ing. Radio.| 1. | noting or pertaining to a method of changing the frequency of an incoming radio signal by adding it to a signal generated within the receiver to produce fluctuations or beats of a frequency equal to the difference between the two signals. |
| 2. | to produce a heterodyne effect. |
| 3. | to mix (a frequency) with a different frequency so as to achieve a heterodyne effect. |