antihistamine
UK: ˌæntiˈhɪstəmiːn | US: ˌæntiˈhɪstəmiːn
n. a drug or compound that counteracts the effects of histamine, used to treat allergies or cold symptoms.
The word combines "anti-" (from Greek anti, meaning "against") and "histamine" (a compound derived from "histo-" <tissue> + "amine" <nitrogenous compound>). Histamine was first identified in 1910, and by the 1930s, scientists developed drugs to block its effects, leading to the term "antihistamine." The prefix "anti-" clearly signals opposition, while "histamine" reflects its biological role, making the word logically structured for medical terminology.
She took an antihistamine to relieve her hay fever symptoms.
Antihistamines can cause drowsiness as a side effect.
The doctor recommended a non-drowsy antihistamine for daytime use.
Over-the-counter antihistamines are effective for mild allergies.
Research continues to improve antihistamine formulations for better tolerance.