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WordReference Random House Learner's Dictionary of American English © 2024con•ta•gious /kənˈteɪdʒəs/USA pronunciation adj. - Pathology(of a disease) able to be spread by bodily contact with an infected person or object:contagious meningitis.
- Pathology(of a person) carrying or spreading a contagious disease:Don't come near me; I'm still contagious.
- tending to spread from person to person:contagious laughter.
con•ta•gious•ly, adv. con•ta•gious•ness, n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2024con•ta•gious (kən tā′jəs),USA pronunciation adj. - Pathologycapable of being transmitted by bodily contact with an infected person or object:contagious diseases.
- Pathologycarrying or spreading a contagious disease.
- tending to spread from person to person:contagious laughter.
- Late Latin contāgiōsus, equivalent. to contāgi(ō) contagion + -ōsus -ous
- 1350–1400; Middle English
con•ta′gious•ly, adv. con•ta′gious•ness, con•ta•gi•os•i•ty (kən tā′jē os′i tē),USA pronunciation n. - 1.See corresponding entry in Unabridged Contagious, infectious are usually distinguished in technical medical use. Contagious, literally "communicable by contact,'' describes a very easily transmitted disease as influenza or the common cold. Infectious refers to a disease involving a microorganism that can be transmitted from one person to another only by a specific kind of contact; venereal diseases are usually infectious. In nontechnical senses, contagious emphasizes the rapidity with which something spreads:Contagious laughter ran through the hall.Infectious suggests the pleasantly irresistible quality of something:Her infectious good humor made her a popular guest.
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