[ sin-uh-zee-sis ]
/ ˌsɪn əˈzi sɪs /

noun Phonetics.

the combination into one syllable of two vowels (or of a vowel and a diphthong) that do not form a diphthong.

Origin of synizesis

1840–50; < Late Latin < Greek synízēsis, equivalent to syn- syn- + (h)iz- (stem of hízein to sit1) + -ēsis -esis
Also called synaeresis. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for synizesis

  • The synizesis and synapsis stages are similar to those in Chelymorpha (figs. 61 and 62).

    Studies in Spermatogenesis|Nettie Maria Stevens

British Dictionary definitions for synizesis

/ (ˌsɪnɪˈziːsɪs) /


phonetics the contraction of two vowels originally belonging to separate syllables into a single syllable, without diphthongizationCompare syneresis
cytology the contraction of chromatin towards one side of the nucleus during the prophase of meiosis

Word Origin for synizesis

C19: via Late Latin from Greek sunizēsis a collapse, from sunizanein to sink down, from syn- + hizein to sit
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for synizesis

[ sĭn′ĭ-zēsĭs ]


Closure or obliteration of the pupil of the eye.
The phase of meiosis in some species in which the chromatin contracts into a mass at one side of the nucleus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.