IPA: /ɪˈnɒkjʊlənt/
KK: /ɪˈnɑkjələnt/
A substance used to introduce a vaccine or other agent into an organism to stimulate immunity or promote growth.
The farmer used an inoculant to help his crops grow healthier and resist disease.
Inoculant → It is formed from "in-" (meaning into) and "oculare" (meaning to eye or to see). The word refers to something that is introduced into the body, particularly in the context of vaccination, as it is meant to be seen as a protective measure against disease.
Think of something being introduced 'into' ('in-') the body to help protect it, like a vaccine.