INFECTIOUS Definition & Meaning - Merriam-Webster
Sep 25, 2026 · Anything contagious, such as the flu, is always automatically infectious: if you can catch it from someone, it's being …
INFECTIOUS | English meaning - Cambridge Dictionary
INFECTIOUS definition: 1. (of a disease) able to be passed from one person, animal, or plant to another: 2. able to pass…. Learn more.
INFECTIOUS Definition & Meaning | Dictionary.com
INFECTIOUS definition: communicable by infection, as from one person to another or from one part of the body to another. See …
Infectious Diseases: Types, Causes & Treatments - Cleveland Clinic
Infectious diseases are illnesses caused by harmful organisms (pathogens or germs) that get into your body from the outside. Germs …
Infectious - Definition, Meaning & Synonyms | Vocabulary.com
Something that's infectious spreads easily, like infectious cold germs that might be left on a door handle — anyone who touches it …
INFECTIOUS | definition in the Cambridge English Dictionary
INFECTIOUS meaning: 1. (of a disease) able to be passed from one person, animal, or plant to another: 2. able to pass…. Learn more.
Infection - Wikipedia
An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and …
Infectious disease | Definition, Types, & Causes | Britannica
Aug 14, 2026 · Infectious disease is a process caused by an agent, often a microorganism, that impairs a person’s health. Infectious …
infectious - Wiktionary, the free dictionary
Jan 14, 2026 · The word infectious describes any disease or condition that is caused by an infectious agent (such as a bacterium, …
Infectious - definition of infectious by The Free Dictionary
1. Capable of causing infection: an infectious microorganism. 2. Capable of being transmitted by infection: an infectious disease. 3. …