synizesis

noun

1. (countable, rhetoric, uncountable)The fusion of two syllables into one without the formation of a recognized diphthong, especially to fit a certain poetic meter.
2. (countable, uncountable)A dense clumping of chromosomes on one side of the nucleus of a cell, sometimes occurring prior to cell division.
3. (countable, obsolete, uncountable)Occlusion of the pupil of the eye, resulting in loss of vision.