segmental

adjective

1. of, relating to, or characterized by segments or segmentation.
2. Linguistics. noting or pertaining to the discrete elements of sequential speech, as consonants and vowels.

adjective

1. of, like, or having the form of a segment
2. divided into segments
3. linguistics of, relating to, or constituting an isolable speech sound

adj.1816, from segment (n.) + -al (1).