(pathology) The act or process of infecting. / An uncontrolled growth of harmful microorganisms in a host. / A disease caused by a pathogen.

plural of infection

Relating to infection.

(transitive) To bring (the body or part of it) into contact with a substance that causes illness (a pathogen), so that the pathogen begins to act on the body; (of a pathogen) to come into contact with (a body or body part) and begin to act on it.

(obsolete) Infected.

simple past tense and past participle of infect

Having an infection.

Third-person singular simple present indicative form of infect

present participle of infect

Able to cause infection; infectious