We don't have synonyms for frame rate yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are framerate, prime rate and crime rate.
(n) :
The measurement of how quickly an imaging device can produce unique consecutive images called frames, most often expressed in frames per second (often abbreviated "fps") or, equivalently, hertz (Hz).
(n) :
The measurement of how quickly an imaging device can produce unique consecutive images called frames, most often expressed in frames per second (often abbreviated "fps") or, equivalently, hertz (Hz).