An organism consisting of a single cell, often microscopic, such as bacteria or protozoa.

एकल कोशीय जीव

English Usage: The unicellular animal under the microscope appears very complex despite its small size.

Hindi Usage: सूक्ष्मदर्शी के नीचे एकल कोशीय जीव बहुत जटिल दिखता है, इसके छोटे आकार के बावजूद।