Sonority. According to the Merriam Webster dictionary, one of the definitions of the word is as follows: The perceptibility or distinctness of speech sounds when spoken in a context in which stress, pitch, and sound duration are constant. It could also be interpreted as the state of being sonorous, as in producing sound, full or loud in sound. I don’t blame you if you’re a little confused as to what “sonority” or “sonorous” means.