classification (redirected from Classifications)

classification /clas·si·fi·ca·tion/ (klas″ĭ-fĭ-ka´shun) the systematic arrangement of similar entities on the basis of certain differing characteristics.

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adansonian classification  numerical taxonomy.

Angle's classification  a classification of dental malocclusion based on the mesiodistal position of the mandibular dental arch and teeth relative to the maxillary dental arch and teeth; see under malocclusion.

Bergey's classification  a system of classifying bacteria by Gram reaction, metabolism, and morphology.

Caldwell-Moloy classification  classification of female pelves as gynecoid, android, anthropoid, and platypelloid; see under pelvis.

FIGO classification  any of the classification systems established by the International Federation of Gynecology and Obstetrics for the staging of gynecological cancers.

Gell and Coombs classification  a classification of immune mechanisms of tissue injury, comprising four types: type I, immediate hypersensitivity reactions, mediated by interaction of IgE antibody and antigen and release of histamine and other mediators; type II, antibody-mediated hypersensitivity reactions, due to antibody-antigen interactions on cell surfaces; type III, immune complex, local or general inflammatory responses due to formation of circulating immune complexes and their deposition in tissues; and type IV cell-mediated hypersensitivity reactions, initiated by sensitized T lymphocytes either by release of lymphokines or by T-cell–mediated cytotoxicity.

Keith-Wagener-Barker classification  a classification of hypertension and arteriolosclerosis based on retinal changes.

Lancefield classification  the classification of hemolytic streptococci into groups on the basis of serologic action.

New York Heart Association (NYHA) classification  a functional and therapeutic classification for prescription of physical activity for cardiac patients.

Revised European American Lymphoma (REAL) Classification  a classification of lymphomas based on histologic criteria, dividing them into three main categories: B-cell neoplasms, T- or NK-cell neoplasms, and Hodgkin's disease.

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clas·si·fi·ca·tion (kls-f-kshn)

n.

1. A systematic arrangement into classes or groups.

2. The systematic grouping of organisms into categories on the basis of evolutionary or structural relationships between them; taxonomy.

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classification

[klas′ifikā′shən]

Etymology: L, classis, collection, facere, to make

(in research) a process in data analysis in which data are grouped according to previously determined characteristics. classify, v.

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classification [klas″ī-fĭ-ka´shun]

a systematic arrangement of similar entities on the basis of certain differing characteristics. For names of specific classifications, see under the names.

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classification,

n the systematic arrangement according to characteristics of groups or classes.

classification, Angle's,

n See Angle's classification of malocclusion (modified).

classification, Broders',

n See index, Broders'.

classification, cavity,

n See cavity, classification.

classification, Kennedy,

n See Kennedy classification.

classification of habits,

n a compilation of orofacial habits that may be a factor in the etiology of periodontal disease. Habit neuroses include lip biting, cheek biting, biting of foreign objects, and abnormal tongue pressure against the teeth. Occupational ones include thread biting, musician's habits, holding nails in the oral cavity, etc. Miscellaneous ones include thumb sucking, pipe smoking, incorrect toothbrushing habits, cracking nuts with the teeth, and oral cavity breathing.

classification of motion,

n a classification system that identifies the extent of involvement of the body in completing a dental motor task.

classification of partial dentures,

n grouping of partially edentulous situations based on various conditions (e.g., location of the edentulous space, location of remaining teeth, position of direct retainers, and ability of oral structures to support a partial denture).

classification of periodontal diseases,

n the division of periodontal diseases into: (1) gingival disease; (2) chronic periodontitis; (3) aggressive periodontitis; (4) periodontitis as a manifestation of a systemic disease; (5) necrotizing periodontal diseases; (6) abscesses of the periodontium; (7) periodontitis associated with endodontic lesions; and (8) development of acquired deformities and conditions.

classification of pockets,

n the division of periodontal pockets into two classes: (1) suprabony and (2) infrabony, according to the number of osseous walls (i.e., three osseous walls, two osseous walls, one osseous wall). See also pocket.

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classification

division of diagnoses, diseases, pathological findings, microbiological findings into categories or classes. See also nomenclature.

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virus classification

see Table 8.1.

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classification

Any systematic arrangement of similar entities organisms, disease processes, etc, which are separated based on specific types of differences. See Ambulatory payment classification, Ann Arbor classification, Bethesda classification, Black's classification, BLEED classification, Bormann's classification, Broders' classification, Caldwell-Molloy classification, Cambridge classification, Canadian Cardiovascular Society functional classification, Cladistic classification, Deafness classification, DeBakey classification, Denis classification, Dukes classification, FAB–French-American-British classification, FDA classification of devices, FDA Classification of Teratogenicity, Gustilo classification, Hamilton classification, Hazard classification, Hinchey grading classification, International Classification of Diseases–9th edition, Clinical Modification classification, International Workshop classification for chronic lymphocytic leukemia, ILO classification, Kiel classification, Killip classification, Lovejoy's classification, Ludwig classification, Lukes-Collins classification, Marseille classification, McKusick classification, New York Heart Association classification, Norwood classification, Obesity Task Force classification, Papanicolaou classification, Pesaro classification, Physical status classification, Quebec classification, Rappaport classification, REAL classification, Rosenthal classification, Savary-Miller classification, Shandall classification, TNM classification, Ulcerative colitis classification, Vaughan Williams classification, WHO classification, Wolfe classification, Working Formulation.

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Patient discussion about classification.

Q. How are Heart Murmurs Classified? What are the characteristics of different heart murmurs?

A. Murmurs can be classified by different characteristics: timing, shape, location, radiation, intensity and more. Timing refers to whether the murmur is a systolic or diastolic murmur. Shape refers to the intensity over time. Location refers to where the heart murmur is auscultated best. The general rule of thumb is that the sound radiates in the direction of the blood flow. Intensity refers to the loudness of the murmur, and is graded on a scale from 0-6/6.