Definition of "Infection" :

noun: (international law) illegality that taints or contaminates a ship or cargo rendering it liable to seizure

noun: moral corruption or contamination

"Ambitious men are led astray by an infection that is almost unavoidable."

noun: the communication of an attitude or emotional state among a number of people

"The infection of his enthusiasm for poetry."

noun: an incident in which an infectious disease is transmitted

noun: (medicine) the invasion of the body by pathogenic microorganisms and their multiplication which can lead to tissue damage and disease

noun: (phonetics) the alteration of a speech sound under the influence of a neighboring sound

noun: the pathological state resulting from the invasion of the body by pathogenic microorganisms