nounused with a sing. verb
- The science of systematic classification.
- A system of classification, as biosystematics.
- Biology The systematic classification of organisms, especially in terms of the similarities or evolutionary relationships among them; taxonomy.
- (plural only) The science of systematic classification, especially of organisms. Depending on context this may be the same as taxonomy or distinct. In the latter case systematics will be taken to mean the research into the relationships of organisms, while taxonomy will involve itself in the recognition and the naming of taxa.