- (n.) A combination of two written vowels pronounced as one; a digraph.
- (n.) A single uncompounded vowel sound.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). monophthong. Retrieved September 20, 2026, from http://smartdefine.org/monophthong/definitions/2034222 |
| Chicago | Webster's. 2011. "monophthong" http://smartdefine.org/monophthong/definitions/2034222 (accessed September 20, 2026). |
| Harvard | Webster's 2011, monophthong, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/monophthong/definitions/2034222>. |
| MLA | Webster's. "monophthong" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/monophthong/definitions/2034222> |