sandhi

noun1

1. •
   Any of a wide variety of phonological processes that occur at morpheme or word boundaries, such as the fusion of sounds across word boundaries and the alteration of sounds due to neighboring sounds or due to the grammatical function of adjacent words.

   • The rules on sandhi in Pâli may be divided into rules on vowel-sandhi, and rules on mixed sandhi where a vowel and a consonant are concerned. Consonantal sandhi does not occur in Pâli. — 1884