Definition of histamine in English:

histamine

Line breaks: his|ta¦mine
Pronunciation: /ˈhɪstəmiːn
 
/

noun

[mass noun] Biochemistry
  • A compound which is released by cells in response to injury and in allergic and inflammatory reactions, causing contraction of smooth muscle and dilation of capillaries.
    • A heterocyclic amine; chemical formula: C5H9N3
    More example sentences
    • The allergic reaction causes the cells to release histamine, a chemical which prompts the sneezing and itching impulse.
    • Quercetin reduces histamine degranulation and the subsequent release of histamine and inflammatory leukotrienes.
    • Allergic reactions involve the release of histamine, a chemical that triggers inflammation and swelling.

Derivatives

histaminic

Pronunciation: /-ˈmɪnɪk/
adjective
More example sentences
  • This drug has minimal activity at histaminic, serotonergic, cholinergic or adrenergic receptor sites.
  • Antipsychotics with lower potency have a greater affinity for histaminic, alpha-adrenergic and muscarinic receptors.
  • Depending on the specific drug, there may be effects on muscarinic, adrenergic, or histaminic receptors.

Origin

early 20th century: blend of histidine and amine.

More definitions of histamine

Definition of histamine in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day skosh
Pronunciation: skōSH
noun
a small amount; a little