IPA: /ˈmɪl.djuː.saɪd/
KK: /ˈmɪl.djuː.saɪd/
A substance used to kill mildew, which is a type of fungus that grows in damp conditions.
The gardener applied a mildewcide to prevent the growth of mold on the plants.
Mildewcide → It is formed from "mildew" (from Old English *mildew*, meaning a type of fungus or mold) and "-cide" (from Latin *caedere*, meaning to kill). The word "mildewcide" refers to a substance that kills mildew or mold.
Think of a substance that 'kills' ('-cide') a type of 'fungus' or 'mold' ('mildew') — that's what mildewcide does.