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[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.
Also called synaeresis.
Origin of synizesis
1840-50; < Late Latin < Greek synízēsis, equivalent to syn- syn- + (h)iz- (stem of hízein to sit1) + -ēsis -esis Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for synizesis
Historical Examples
  • 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


(phonetics) the contraction of two vowels originally belonging to separate syllables into a single syllable, without diphthongization Compare syneresis
(cytology) the contraction of chromatin towards one side of the nucleus during the prophase of meiosis
Word Origin
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
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synizesis in Medicine

synizesis syn·i·ze·sis (sĭn'ĭ-zē'sĭs)

  1. Closure or obliteration of the pupil of the eye.

  2. 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.
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