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synapsis

American  
[si-nap-sis] / sɪˈnæp sɪs /

noun

  • synapses
    plural
  1. Also called syndesis. Cell Biology. the pairing of homologous chromosomes, one from each parent, during early meiosis.

  2. Physiology. synapse.


synapsis British  
/ sɪˈnæpsɪs /

noun

  1. cytology the association in pairs of homologous chromosomes at the start of meiosis

  2. another word for synapse

"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

Other Word Forms

Derived Forms

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Nouns

Etymology

Origin of synapsis

1645–55; < New Latin < Greek sýnapsis “junction,” equivalent to synap- (stem of synáptein “to make contact,” equivalent to syn- syn- + (h)áptein “to touch”) + -sis -sis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

This photocurrent mimics the responses transmitted by synapsis in the human brain, enabling the device to interpret and process biological information received from optical sensors.

From Science Daily ● Mar. 11, 2024

The tight pairing of the homologous chromosomes is called synapsis.

From Textbooks ● Jun. 9, 2022

Scientists thought chiasmata were a variation on synapsis and could not understand how chromosomes could break and rejoin.

From Textbooks ● Jun. 9, 2022

Misaligned or incomplete synapsis, or a dysfunction of the spindle apparatus that facilitates chromosome migration, can cause nondisjunction.

From Textbooks ● Jun. 9, 2022

Possibly his experience with the bounty hunter Phil Resch had altered some minute synapsis in him, had closed one neurological switch and opened another.

From "Do Androids Dream of Electric Sheep?" by Philip K. Dick

Which means you have to find your emotional connection, and that’s likely going to generate from whatever synapses are firing up in the memory bank.

From Salon ● Oct. 7, 2026

The findings suggest that increasing dietary plasmalogens may help protect synapses from some forms of age-related deterioration.

From Science Daily ● Sep. 4, 2026

During development, microglia influence which synapses neurons retain and which ones are eliminated.

From Science Daily ● Sep. 1, 2026

Earlier work by Dr. Polleux showed that human-specific copies of SRGAP2 increase the number of synapses, or connections, made by neurons while also causing those synapses to mature very slowly.

From Science Daily ● Sep. 1, 2026

Trying to fill the gaps between her own synapses.

From "The Adoration of Jenna Fox" by Mary E. Pearson

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