Etymology

epipen

E1P3I1P3E1N1

Today it means: An epinephrine/adrenaline autoinjector. A device designed to ease the symptoms of anaphylaxis/anaphylactic shock, so as to save the life of the victim of the extreme allergic reaction, by injecting a dose of adrenaline/epinephrine through a spring-loaded needle that punches into the tissue it is triggered against. Full definition →

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epipen · noun1

Genericization of the trademark EpiPen, presumably a blend of epinephrine + pen, from being a pen-sized device used to inject epinephrine.

EpiPen · proper noun, noun2

Originally a trademark; a marketing coinage, presumably a blend of epinephrine + pen.

Etymology from Wiktionary, CC BY-SA 4.0.