(klas″ĭ-fĭ-kā′shŏn )
The orderly grouping of similar organisms, animals, individuals, diseases, or pathological findings according to traits or characteristics common to each group.
SEE: Angle classification
SEE: Arneth, Joseph
Any of five classifications of dental caries according to the part of the tooth involved. Class I is occlusal; class II, interproximal, commonly at the dentinoenamel junction of bicuspids and molars; class III, interproximal surfaces not involving incisal surfaces; class IV, interproximal but involving an incisal surface; and class V, the faciocervical area.
SYN: SEE: cavity classification
A system for classifying chromosomes based on the size and position of the centromere.
SEE: chromosome
SEE: Dukes classification
SEE: International Classification of Functioning, Disability, and Health
SEE: International Classification of Functioning, Disability, and Health for Children and Youth
A systematic method of assigning organisms to various groups. Living organisms are classified into five kingdoms: Monera (Prokaryota), Protista, Fungi, Plantae, and Animalia. Within a kingdom, the subdivisions usually are phylum, class, order, family, genus, and species. The genus and species names are referred to as binomial nomenclature, with the larger (genus) category first and the precise species name second.
SEE: taxonomy
SEE: Angle classification
A method of classifying malignant tumors with respect to primary tumor, involvement of regional lymph nodes, and presence or absence of metastases.