Mōn'oph-thōng, n.

(mōn′of-thōng, or mo-nōp′thong) (Synop., § 130), n. [Gr. μονόφθογγος, from μόνος, alone, and φθογγός, sound, voice, from φθέγγεσθαι, to utter a sound or voice.]

1Sense 1. A single uncompounded vowel sound.

2Sense 2. A combination of two written vowels pronounced as one; a digraph.