Definition of neuron
: a grayish or reddish granular cell that is the fundamental functional unit of nervous tissue transmitting and receiving nerve impulses and having cytoplasmic processes which are highly differentiated frequently as multiple dendrites or usually as solitary axons which conduct impulses to and away from the cell body : nerve cell 1
Recent Examples of neuron from the Web
Researchers who studied the brains of cadavers from people who suffered from both RBD and a brain disease found damage to the neurons in the brain stem.
In the second are more than 25 friends and acquaintances whom Gordon — disabled by degenerative motor neuron disease — can call on for a ride to the doctor or a trip to the grocery store.
Chronic pain may be caused by a kind of pain receptor located inside neurons, out of reach of existing drugs, according to a study led by scientists in America and Australia.
Chronic sleep deprivation in mice causes microglia — brain cells that get rid of toxins and clear debris — to eat small pieces of the synapses, the connections that allow neurons to communicate with each other, the study found.
Two-thirds of the roughly 500 million neurons in an octopus are found in its arms.
Given the redundancy built into the brain, about a third of motor neurons are destroyed before signs of muscle loss become apparent.
When the network correctly solves a problem, additional weight is given to the outputs of the neurons that correctly predicted the answer, and so the network learns.
Vertebrates, including humans, have millions or billions of neurons, and so scientists have made fewer advances in studying their zombification.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'neuron'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of neuron
New Latin neuron, from Greek, nerve, sinew — more at nerve
First Known Use: 1891
NEURON Defined for English Language Learners
Definition of neuron for English Language Learners
medical : a cell that carries messages between the brain and other parts of the body and that is the basic unit of the nervous system
NEURON Defined for Kids
Medical Definition of neuron
: one of the cells that constitute nervous tissue, that have the property of transmitting and receiving nerve impulses, and that are composed of somewhat reddish or grayish protoplasm with a large nucleus containing a conspicuous nucleolus, irregular cytoplasmic granules, and cytoplasmic processes which are highly differentiated frequently as multiple dendrites or usually as solitary axons and which conduct impulses toward and away from the cell body : nerve cell 1
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