Definition of autoinjector in English:

autoinjector

Pronunciation /ˌɔːtəʊɪnˈdʒɛktə/

noun

  • 1Medicine
    A device used for the self-administration of a drug by injection.

  • 2A device that automatically injects a liquid or gas into an engine cylinder, instrument, etc.

Origin

Early 20th century. From auto- + injector.