Two or more phones
) are tautosyllabic
(with each other) if they occur in the same syllable
. Take for instance the English word "cat". Since this word is monosyllabic
, the three phones /k/, /æ/ and /t/ are tautosyllabic. They can also be described as sharing a 'tautosyllabic distribution'. However, in the French word "être" (meaning "to be", syllabified ê-tre), only the three last phones /t/, /r/ and /e/ are tautosyllabic, all members of the second syllable. Phones which are not tautosyllabic are heterosyllabic
. For example, in the English word "mustard", /m/ and /t/ are heterosyllabic, as they are members of different syllables.