n.
Pronunciation: ' dif- ˌ tho ̇ ŋ , ' dip-
Function: noun
Etymology: Middle English diptonge, from Middle French diptongue, from Late Latin dipthongus, from Greek diphthongos, from di- + phthongos voice, sound
Date: 15th century
1 : a gliding monosyllabic speech sound (as the vowel combination at the end of toy ) that starts at or near the articulatory position for one vowel and moves to or toward the position of another
2 : DIGRAPH
3 : the ligature æ or
– diph · thon · gal \ dif- ' tho ̇ ŋ -(g) ə l, dip- \ adjective