- capable of being transmitted by bodily contact with an infected person or object: contagious diseases.
- carrying or spreading a contagious disease.
- tending to spread from person to person: contagious laughter.
Origin of contagious
Examples from the Web for contagiously
Historical Examples of contagiously
And he laughs, too, contagiously, and you know that you are going to get on!The Fifth Wheel
Olive Higgins Prouty
Hannah was sanguine in this expectation; and for a moment her hopes were contagiously exciting to mine.The Uncollected Writings of Thomas de Quincey, Vol. 2
Thomas de Quincey
London was a Tommy on leave, insubordinately, humorously, contagiously happy.The Kingdom Round the Corner
- (of a disease) capable of being passed on by direct contact with a diseased individual or by handling clothing, etc, contaminated with the causative agentCompare infectious
- (of an organism) harbouring or spreading the causative agent of a transmissible disease
- causing or likely to cause the same reaction or emotion in several people; catching; infectiousher laughter was contagious
Word Origin and History for contagiously
late 14c., from Old French contagieus (Modern French contagieux), from Late Latin contagiosus, from Latin contagio (see contact (n.)).
- Of or relating to contagion.
- Transmissible by direct or indirect contact; communicable.
- Capable of transmitting disease; carrying a disease.
- Capable of being transmitted by direct or indirect contact, as an infectious disease.
- Bearing contagion, as a person or animal with an infectious disease that is contagious.
Usage: A contagious disease is one that can be transmitted from one living being to another through direct or indirect contact. Thus the flu, which can be transmitted by coughing, and cholera, which is often acquired by drinking contaminated water, are contagious diseases. Although infectious is also used to refer to such diseases, it has a slightly different meaning in that it refers to diseases caused by infectious agents-agents such as viruses and bacteria that are not normally present in the body and can cause an infection. While the notion of contagiousness goes back to ancient times, the idea of infectious diseases is more modern, coming from the germ theory of disease, which was not proposed until the later nineteenth century. Contagious and infectious are also used to refer to people who have communicable diseases at a stage at which transmission to others is likely.