English Reference

Word

synaptic

Phoneticssynap·tic

US/ˌsɪˈnæptɪk/

UK/sɪnˈæptɪk/

Definition

adj. relating to the tiny gaps between nerve cells where signals pass from one to another. It describes how your brain cells talk to each other.

adj. relating to a synapse or the transmission of nerve impulses across the junction between neurons. Typically used in neurobiological contexts to describe chemical or electrical signaling.

Examples

“The brain forms new synaptic connections when you learn something.”

“Researchers are studying how synaptic plasticity allows the brain to reorganize itself after a physical injury.”

“The drug works by increasing synaptic concentrations of serotonin, thereby enhancing the transmission of signals between neurons in the central nervous system.”

Examples

simple

“The brain forms new synaptic connections when you learn something.”

contextual

“Researchers are studying how synaptic plasticity allows the brain to reorganize itself after a physical injury.”

complex

“The drug works by increasing synaptic concentrations of serotonin, thereby enhancing the transmission of signals between neurons in the central nervous system.”

Usage

Typically used in scientific or medical contexts; often precedes nouns like 'connection', 'gap', or 'plasticity'.

Real-World Examples

Common in science writing

“They can alter their physiology ("synaptic weights") in ways that reflect information learned from the outside world.”
ScienceDaily · 18 Aug 2026
“On Earth, information is encoded physically in DNA strands and synaptic impulses; elsewhere in the cosmos, it might take such different forms that we wouldn’t recognise it even if we found it.”
The Guardian · 11 Aug 2026

Etymology

From New Latin synapticus, from Ancient Greek συναπτικός (sunaptikós, “capable of adjusting”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

synapseNounsynapticAdjective

This entry

Level
C2 · Proficiency
Frequency
Occasional
Updated

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English Reference