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Pronunciation:  in'fekshus di'zeez

WordNet Dictionary
[n]  a disease transmitted only by a specific kind of contact
 See Also: acquired immune deficiency syndrome, acute anterior poliomyelitis, AIDS, Asiatic cholera, black vomit, breakbone fever, brucellosis, cholera, communicable disease, dandy fever, dengue, dengue fever, dysentery, enteric fever, epidemic cholera, epidemic disease, epidemic parotitis, frambesia, framboesia, Gibraltar fever, glandular fever, Hansen's disease, hepatitis, herpes, Indian cholera, infantile paralysis, infectious mononucleosis, kissing disease, Lassa fever, leprosy, LGV, listeriosis, lymphogranuloma venereum, lymphopathia venereum, Malta fever, Mediterranean fever, meningitis, miliary fever, mono, mononucleosis, mumps, paratyphoid, paratyphoid fever, pertussis, polio, poliomyelitis, ratbite fever, recurrent fever, relapsing fever, rheumatic fever, rickettsial disease, rickettsiosis, Rock fever, sweating sickness, T.B., TB, tuberculosis, typhoid, typhoid fever, undulant fever, whooping cough, yaws, yellow fever, yellow jack



Webster's 1913 Dictionary
\In*fec"tious dis*ease"\
(a) Any disease caused by the entrance, growth, and
    multiplication of bacteria or protozoans in the body; a
    germ disease. It may not be contagious.
(b) Sometimes, as distinguished from contagious disease, such
    a disease communicated by germs carried in the air or
    water, and thus spread without contact with the patient,
    as measles.

Biology Dictionary
 Definition: Any of many diseases or illnesses (caused by bacteria or viruses) that can be transmitted from person to person or from organism to organism. For instance, the common cold and AIDS are infectious diseases, whereas illnesses such as diabetes and gout are not.
Thesaurus Terms
 Related Terms: abnormality, acute disease, affection, affliction, ailment, allergic disease, allergy, atrophy, bacterial disease, birth defect, blight, cardiovascular disease, chronic disease, circulatory disease, complaint, complication, condition, congenital defect, defect, deficiency disease, deformity, degenerative disease, disability, disease, disorder, distemper, endemic, endemic disease, endocrine disease, epidemic disease, functional disease, fungus disease, gastrointestinal disease, genetic disease, handicap, hereditary disease, iatrogenic disease, illness, indisposition, infirmity, malady, malaise, morbidity, morbus, muscular disease, neurological disease, nutritional disease, occupational disease, organic disease, pandemic disease, pathological condition, pathology, plant disease, protozoan disease, psychosomatic disease, respiratory disease, rockiness, secondary disease, seediness, sickishness, sickness, signs, symptomatology, symptomology, symptoms, syndrome, the pip, urogenital disease, virus disease, wasting disease, worm disease