noun🔗ShareNeurotransmisorAny substance, such as acetylcholine or dopamine, responsible for sending nerve signals across a synapse between two neurons."When Maria felt happy after receiving good news, the neurotransmitter dopamine was released in her brain. "Cuando María se sintió feliz después de recibir buenas noticias, el neurotransmisor dopamina se liberó en su cerebro.medicinephysiologybiochemistrybiologysubstanceorganbodycommunicationsignalsensationmindChat with AIVocabulary GamePractice Reading