|the primary subdivision of a taxonomic kingdom, grouping together all classes of organisms that have the same body plan|
|the species of a genus that is regarded as the best example of the generic characters of the genus, from which a genus was originally named|
|1.||systematic placement in categories|
|2.||one of the divisions in a system of classifying|
|a. the placing of animals and plants in a series of increasingly specialized groups because of similarities in structure, origin, molecular composition, etc, that indicate a common relationship. The major groups are domain or superkingdom, kingdom, phylum (in animals) or division (in plants), class, order, family, genus, and species|
|b. the study of the principles and practice of this process; taxonomy|
|4.||government the designation of an item of information as being secret and not available to people outside a restricted group|
|[C18: from French; see |
classification clas·si·fi·ca·tion (klās'ə-fĭ-kā'shən)
A systematic arrangement into classes or groups.
The systematic grouping of organisms into categories on the basis of evolutionary or structural relationships between them; taxonomy.
|classification (klās'ə-fĭ-kā'shən) Pronunciation Key
The systematic grouping of organisms according to the structural or evolutionary relationships among them. Organisms are normally classified by observed similarities in their body and cell structure or by evolutionary relationships based on the analysis of sequences of their DNA. See more at cladistics, Linnean. See Table at taxonomy.