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| neurotransmitter [ nyrō tranz míttər ] (plural neurotransmitters) |
noun |
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chemical carrying communication between nerves: a chemical that carries messages between different nerve cells or between nerve cells and muscles, e.g. to trigger or prevent an impulse in the receiving cell. Excitatory neurotransmitters trigger a nerve impulse in the receiving cell, while inhibitory neurotransmitters act to prevent further transmission of an impulse.
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