Inflected forms: pl. syn·i·ze·ses (-sz) 1.Linguistics The union in pronunciation of two adjacent vowels into one syllable without forming a diphthong. 2.Biology The phase of meiosis in some species in which the chromatin contracts into a mass at one side of the nucleus.
ETYMOLOGY:
Late Latin synizsis, from Greek sunizsis, from sunizein, to collapse : sun-, syn- + hizein, to settle down; see sed- in Appendix I.