systematics

n. science of classification; study and classification of organisms based on their evolutionary relationships; system of classification

Biological systematics is the study of the diversity of life on the planet Earth, both past and present, and the relationships among living things through time. Relationships are visualized as evolutionary trees (synonyms: phylogenic trees, phylogenies). Phylogenies have two components, branching order (showing group relationships) and branch length (showing amount of evolution). Phylogenetic trees of species and higher taxa are used to study the evolution of traits (e.g., anatomical or molecular characteristics) and the distribution of organisms (biogeography). Systematics, in other words, is used to understand the evolutionary history of life on Earth.
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Noun
1. the science of systematic classification
(hypernym) science, scientific discipline
(hyponym) biosystematics, biosystematy

Classification of living things with regard to their evolutionary relationship. Link to a lecture on systematics.

Synonyms and related words:
Buddhology, Mariolatry, Mariology, Mercersburg theology, antonomasia, apologetics, binomial nomenclature, biosystematics, biosystematy, canonics, class, classification, crisis theology, dialogical theology, divinity, doctrinalism, doctrinism, dogmatics, eschatology, existential theology, family, genus, glossology, hagiography, hagiology, hierology, kingdom, logos Christology, logos theology, natural theology, neoorthodox theology, neoorthodoxy, nomenclature, onomastics, onomatology, order, orismology, patristic theology, phenomenological theology, phylum, physicotheology, place-names, place-naming, polyonymy, rationalism, religion, scholastic theology, secularism, soteriology, species, taxonomy, terminology, theology, toponymy, trinomialism