diphthong
n. இணையுயிர், ஓரசையாக ஒலிக்கப்படும் இரண்டு உயிரெழுத்தொலிகள், ஒரே உயிரொலியையுடைய ஈரெழுத்து, இரண்டு உயிரெழுத்துக்கள் இணைந்த அச்சுரு.
Diph"thong (; 115, 277), n. Etym: [L. diphthongus, Gr. diphthongue.] (Orthoëpy) (a) A coalition or union of two vowel sounds pronounced in one syllable; as, ou in out, oi in noise; -- called a proper diphthong. (b) A vowel digraph; a union of two vowels in the same syllable, only one of them being sounded; as, ai in rain, eo in people; -- called an improper diphthong. Diph"thong, v. t. Defn: To form or pronounce as a diphthong; diphthongize. [R.]