Definition of phenylephrine in English:

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Pronunciation: /ˌfiːnʌɪlˈɛfrɪn/
Pronunciation: /ˌfɛnɪlˈɛfrɪn/ Pronunciation: /ˌfiːnʌɪlˈɛfriːn/ Pronunciation: /ˌfɛnʌɪlˈɛfriːn/


[mass noun] Medicine
A synthetic compound related to adrenaline, used as a vasoconstrictor and nasal decongestant.
Example sentences
  • Endoscopy is performed after spraying the nose with a topical nasal vasoconstrictor such as phenylephrine (Neo-Synephrine) or oxymetazoline, and an analgesic such as pontocaine or lidocaine.
  • The decongestants, such as phenylephrine, and pseudoephedrine, produce a narrowing of blood vessels.
  • Nasal decongestants for example, oxymetazoline, xylometazoline, phenylephrine, ephedrine are applied directly to the inside of the nose.


1940s: from phenyl + a contraction of epinephrine.

For editors and proofreaders

Line breaks: phenyl|eph¦rine

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