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synapsis Line breaks: syn|ap¦sis
Pronunciation: /sɪˈnapsɪs/

Definition of synapsis in English:


[mass noun] Biology
The fusion of chromosome pairs at the start of meiosis.
Example sentences
  • It has long been thought that the grouping of telomeres is important for chromosome pairing and subsequent synapsis.
  • It was proposed that these sites mediated the initial interactions between homologous chromosomes leading to synapsis and recombination.
  • These findings suggest that the extensive protein modification that occurs to prepare chromosomes for synapsis and recombination may provide at least a partial mechanism by which rereplication is blocked.


Late 19th century: modern Latin, from Greek sunapsis 'connection, junction'.

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