A vowel cluster is two or more vowels occurring next to each other in a single syllable with no intervening consonant. Vowel clusters are distinct from diphthongs in that diphthongs are vowel combinations in a single syllable involving a quick but smooth movement from one vowel to another while vowel clusters have a slower rate of change of formant trajectories. Note: This page contains IPA phonetic symbols in Unicode. ... A syllable (Ancient Greek: ) is a unit of organization for a sequence of speech sounds. ... In articulatory phonetics, a consonant is a sound in spoken language that is characterized by a closure or stricture of the vocal tract sufficient to cause audible turbulence. ... In phonetics, a diphthong (Greek δίÏθογγοÏ, diphthongos, literally with two sounds, or with two tones) is a vowel combination in a single syllable involving a quick but smooth movement from one vowel to another, often interpreted by listeners as a single vowel sound or phoneme. ... Note: This page contains IPA phonetic symbols in Unicode. ... A syllable (Ancient Greek: ) is a unit of organization for a sequence of speech sounds. ... Glissando (plural: glissandi) is a musical term that refers to either a continuous sliding from one pitch to another (a true glissando), or an incidental scale played while moving from one melodic note to another (an effective glissando). ...