Meaning : A hypodermic syringe to use in injecting yourself with a liquid.
Example :
United States troops now carry atropine and autoinjectors in their first-aid kits to use in case of organophosphate nerve agent poisoning.
Autoinjector ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Autoinjector ka matlab kya hota hai?