Dictionary.com
Thesaurus.com

synapsis

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

noun

  • synapses
    plural
  1. Also called syndesisCell 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

Inflected Forms

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

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

The tight pairing of the homologous chromosomes is called synapsis.

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

The new framework proposes that the brain learns these recurring patterns and stores them within networks of synapses.

From Science Daily Aug. 18, 2026

Because physical remodeling of brain synapses generally takes longer, the scientists concluded that rapamycin was changing brain function rather than rebuilding the brain's underlying structure.

From Science Daily Jul. 25, 2026

Neurons communicate through two main types of synapses: chemical and electrical.

From Science Daily Jul. 14, 2026

The researchers hope the discovery will help identify medication that can prevent the loss of synapses - the vital connections that allow messages to flow between brain cells and support healthy brain function.

From BBC Jun. 2, 2026

“This is very good,” I said, half a minute or so later, just as the first euphoric sparkle was starting to hit my synapses.

From "The Secret History" by Donna Tartt

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training