IPA: //ˌproʊtəzoʊˈɑlədʒi//
KK: /proʊtəzoʊˈɑlədʒi/
The scientific study of tiny, single-celled organisms known as protozoans, which are a type of microorganism.
She decided to specialize in protozoology because of her interest in microscopic life forms.
Protozoology → It is formed from "proto-" (from Greek "protos", meaning first) and "zoology" (from Greek "zōion", meaning animal, and "logia", meaning study). The word refers to the study of the first or simplest forms of animal life, specifically protozoa.
Think of 'first' ('proto-') and 'study of animals' ('zoology') to remember that protozoology is the study of the simplest forms of animal life.