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

inflammatory
Relating to inflammation or swelling.
pathogen
An organism that causes disease.
contagious
Capable of being transmitted from one individual to another.

Slang Meanings

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