👉 The term "crinula" is commonly used in biology to refer to a type of protozoan parasite. A crinula, also known as an amoeba or amoeboid organism, is a form of amoeba that lives on or in living cells. Crinulas are capable of causing disease by utilizing the host's cells for their own survival and reproduction. The term "crinula" is often used to describe these parasites because they are particularly common in humans and other animals