tyramine Syllabification: (ty·ra·mine)Pronunciation: /ˈtīrəˌmēn/Definition of tyramine noun Biochemistry a compound that occurs naturally in cheese and other foods and can cause dangerously high blood pressure in people taking a monoamine oxidase inhibitor. An amine related to tyrosine; chemical formula: C6H4(OH)CH2CH2NH2 Origin: early 20th century: from tyr(osine) + aminetyramine in other Oxford dictionaries Definition of tyramine in the British & World English dictionary