Phenylephrine

Part of speech: noun

Pronunciation: /ˌfiː.nʌɪlˈɛf.ɹɪn/

Definitions

1. A drug commonly used to relieve nasal congestion by narrowing blood vessels in the nasal passages
2. A pharmaceutical compound that reduces swelling and congestion in the nose by constricting blood vessels
3. An active agent applied to treat stuffy noses by causing constriction of blood vessels in the mucous membranes

Etymology: Phenylephrine is a modern pharmaceutical coinage, a blend of "phenyl" and "epinephrine" (the hormone also known as adrenaline). The first half names the benzene-ring chemical group that forms the core of the molecule, while the second half points to its close relationship with epinephrine, whose constricting effect on blood vessels it mimics. Chemists and drug makers built the name from these two existing terms rather than inheriting it from an older vocabulary. The compound's blood-vessel effect is what makes it useful against congestion. When applied to the nasal lining, it narrows the swollen vessels in the mucous membranes, reducing the swelling that blocks the airways. The word thus packs a chemical description and a pharmacological function into a single coined term.