Taxonomy
Taxonomy was the part of biology dealing with the definition and classification of organisms. One taxonomic rank was the genus. (, ) Examples of taxonomic nomenclature, which were usually rendered in Latin include "Felis catus" (cats) () and "Homo sapiens" (Humans) (, )

Data's poem Ode to Spot included the line "Felis catus is your taxonomic nomenclature". When a malfunction of  computer in 2369 caused the overwriting of several ship files with Data's personal files, the line about the taxonomic name of cats appeared on a PADD instead of the text of Something for Breakfast. ()

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Academic disciplines