viseme

plural visemes

1. Any of a group of speech sounds that look the same, for example when lipreading.

   Each of these groups is called a viseme, a term coined by Fisher (1968). It is possible for a viseme to contain only one speech sound, but that is unusual.

   1996, Mary June Moseley, Communication Therapy, page 234

   1 more example

   Resulting confusion matrices were analyzed for significant confusions among consonants; these confusions were grouped into mutually exclusive classes termed visemes.

   1968 December 28, Cletus G. Fisher, “Confusions Among Visually Perceived Consonants”, in Journal of Speech, Language, and Hearing Research, volume 11, page 796