I. | ̷ ̷ ̷ ̷ at mono- + noun
also mon·amine (|)män, (|)mōn+
Etymology: International Scientific Vocabulary mon- + amine
: an amine containing only one amino group
• mono·amino | ̷ ̷ ̷ ̷ at mono- + adjective
II. noun
: a primary amine (as serotonin or norepinephrine) that is functionally important in neural transmission