Infection

/ɪnˈfɛkʃən/

Meaning & Definition

noun
The invasion of the body by pathogenic microorganisms that reproduce and multiply, often resulting in disease.
The doctor diagnosed her with a respiratory infection that required immediate treatment.
A disease caused by the presence of microorganisms in the body.
The infection spread rapidly through the nursing home, affecting many residents.
The act of infecting or the condition of being infected.
Proper hygiene is essential to prevent the spread of infection in hospitals.
An infectious disease.
The flu is a common viral infection that can lead to serious complications.

Etymology

Late Middle English: from Latin infectio(n-), from the verb inficere 'taint, dye, infect'.

Common Phrases and Expressions

viral infection:
An illness caused by a virus.
bacterial infection:
An illness caused by bacteria.
chronic infection:
An infection that persists over time.
hospital-acquired infection:
An infection acquired during hospitalization.

Related Words

Slang Meanings

Bug
I caught a bug that's going around.
Germ
Watch out for the germs at the school.