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neuropeptide
neuropharmacology
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neutron
neu·tron [ n tròn ] (plural neu·trons)


noun 
Definition:
 
elementary particle without electric charge: a neutral elementary particle of the baryon family with a zero electrical charge and a mass approximately equal to that of a proton
[Early 20th century. <neutral]

neu·tron·ic [ noo trónnik ] adjective
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