'Spectrogram' definitions:

Definition of 'spectrogram'

From: WordNet
noun
A photographic record of a spectrum [syn: spectrogram, spectrograph]

Definition of 'Spectrogram'

From: GCIDE
  • Spectrogram \Spec"tro*gram\, n. [Spectrum + -gram.] (Physics) A photograph, map, or diagram of a spectrum. [Webster 1913 Suppl.]