mi·cro·spo·rid·ia \ˌmīkrəspōˈridēə\noun plural Usage: capitalized Etymology: New Latin, from micr- + -sporidia : an order of Cnidosporidia comprising protozoan parasites of arthropods and fishes that typically invade and destroy host cells — see nosema • mi·cro·spo·rid·i·an\| ̷ ̷ ̷ ̷ ̷ ̷|ridēən\adjective or noun