diphenhydramine

Meaning

1. An antihistamine and anticholinergic drug that blocks the effect of histamine at H₁ receptor sites, relieving allergy symptoms. It also reduces smooth muscle contraction, increases heart rate, and sedates the user by blocking muscarinic acetylcholine receptors (mAChRs).

Etymology / origin

Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Hellenic *dwi- Ancient Greek δῐ- (dĭ-)bor. Latin di-bor. English di- Proto-Indo-European *bʰeh₂-der. Proto-Hellenic *pʰáňňō Ancient Greek φαίνω (phaínō)der. French phéno- Proto-Indo-European *swel-der.? Ancient Greek ῡ̔́λη (hū́lē)der. French -yle French phénylebor. English phenyl English diphen(yl) English (benz)hydr(yl) Egyptian jmnbor. Ancient Greek Ᾰ̓́μμων (Ắmmōn)bor. Latin Ammōn Latin ammoniacusder. English ammonia Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine English amine English -amine English diphenhydramine From diphen(yl) + (benz)hydr(yl) + -amine.

Sources

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