Definition of infectious Infectious

/ɪnfɛˈkʃʌs/ - [infekshus] - in•fec•tious

We found 12 definitions of infectious from 4 different sources.

What does infectious mean?

Adjective
infectious - easily spread; "fear is exceedingly infectious; children catch it from their elders"- Bertrand Russell
		noninfectious not infectious
		catching, contractable, transmittable, communicable, contagious, transmissible (of disease) capable of being transmitted by infection
		contagious easily diffused or spread as from one person to another; "a contagious grin"
infectious - caused by infection or capable of causing infection; "viruses and other infective agents"; "a carrier remains infective without himself showing signs of the disease"
		infective
		infected, septic containing or resulting from disease-causing organisms; "a septic sore throat"; "a septic environment"; "septic sewage"
infectious - of or relating to infection; "infectious hospital"; "infectious disease"

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infectious (Adjective)
Transmitted from one person to another, usually through the air breathed.
infectious (Adjective)
Able to infect others.
infectious (Adjective)
Spreading quickly from one person to another.
infectious (Adjective)
Memorable and invoking excitement or interest.

infectious (a.)
Having qualities that may infect; communicable or caused by infection; pestilential; epidemic; as, an infectious fever; infectious clothing; infectious air; infectious vices.
infectious (a.)
Corrupting, or tending to corrupt or contaminate; vitiating; demoralizing.
infectious (a.)
Contaminating with illegality; exposing to seizure and forfeiture.
infectious (a.)
Capable of being easily diffused or spread; sympathetic; readily communicated; as, infectious mirth.