segmental Syllabification: (seg·men·tal)Pronunciation: /segˈmen(t)l/Definition of segmental adjective 1composed of separate parts or sections. Phonetics denoting or relating to the division of speech into segments. 2 Architecture denoting or of the form of an arch the curved part of which forms a shallow arc of a circle, less than a semicircle. Derivatives segmentalizationPronunciation: /-ˌmen(t)liˈzāSHən/ noun segmentalizePronunciation: /-ˌīz/ verb segmentally adverb segmental in other Oxford dictionaries Definition of segmental in the British & World English dictionary