interneurons

IPA/ˌɪn.təˈnjʊə.rɒn/
IPA/ˌɪn.t̬ɚˈnʊr.ɑːn/

interneurons — noun

  • interneuronssingular
  • interneuronsesplural

1. a type of neuron found in the brain and spinal cord that acts as a bridge, relay

1.nounC1
Definition

a type of neuron found in the brain and spinal cord that acts as a bridge, relaying information between other nerve cells

Example

When Rahul touched the hot mug, interneurons in his spinal cord jerked his hand away.

interneurons in [body part] + [action verb] for reflex response

Dr. Imani explained that interneurons relay signals from one neuron to the next.

relay + signals + from [x] to [y]

Common collocations
  • spinal interneurons
  • inhibitory interneurons
  • excitatory interneurons
  • local interneurons
  • network of interneurons
Synonyms
  • relay neuron

    more descriptive term; used in educational contexts to emphasise the connecting role

  • association neuron

    older term, now less common in modern neuroscience

Grammar Patterns

interneurons + verb (plural form)

interneurons + between + [noun phrase]

Usage Note

Often used in the plural form; the singular is interneuron. In scientific writing, interneurons are contrasted with sensory neurons (which carry signals from sense organs) and motor neurons (which carry signals to muscles).

Common Mistakes

The interneuron sent a signal directly to the muscle.
The motor neuron sent the signal to the muscle; the interneuron only connects one neuron to another.
interneurons link nerve cells to each other; they do not connect directly to muscles or sense organs.

Word family

Synonym discussion

Sense: noun/1

Interneuron, sensory neuron, and motor neuron are the three functional types of neuron. A sensory neuron picks up information from the outside world (light, sound, touch) and carries it towards the brain. A motor neuron carries commands away from the brain to muscles and glands, making the body move or react. An interneuron sits between the two, passing and processing signals inside the central nervous system. For example, when you touch something hot, a sensory neuron sends the pain signal to the spinal cord; an interneuron there immediately relays it to a motor neuron, which pulls your hand back — all before your brain even registers the pain.

sensory neuronmotor neuron

Common collocations

Nouns

Phrases

  • a chain of interneurons
  • interneurons in the spinal cord

Prepositions

Etymology

LatinGreekEnglish

Formed from the prefix inter- (Latin for 'between' or 'among') and neuron (from Greek neuron, meaning 'nerve' or 'sinew'). The term arose in early-20th-century neuroscience as researchers mapped the different roles cells play in signalling pathways, distinguishing cells that connect other neurons from those that receive external input or drive muscle movement.

First known use

1938

1938, in the meaning defined above