IPA: //ˌbaɪ.oʊ.sɪˈmæt.ɪks//
KK: /baɪoʊsɪstəˈmætɪks/
The study of the relationships and classification of living organisms based on their genetic and biochemical characteristics, often used to understand their evolutionary connections.
Biosystematics helps scientists determine how different species are related to each other.
Biosystematics is formed from "bio-" (from Greek "bios", meaning life) and "systematics" (from Greek "systema", meaning a whole or organized body). The word refers to the study of the classification of living organisms and their relationships within a systematic framework.
Think of 'bio-' meaning life, and 'systematics' referring to an organized body — biosystematics is about organizing and classifying life.