Synaeresis
Pronunciation : Syn*?r"e*sis, Syn*er"e*sis
Part of Speech : n.
Etymology : [NL., fr. Gr. Syn-, and Heresy.] (Gram.)
Definition : Defn: The union, or drawing together into one syllable, of two vowels that are ordinarily separated in syllabification; synecphonesis; -- the opposite of di?resis.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder