What does infector mean?
An infector is an agent that causes or transmits an infection. Depending on the context, it may be a person, an organism, a contaminated substance, or another means by which infectious material reaches a host. The word is chiefly specialized and is not usually used for the disease itself: an infection is the condition, while the infector is the source or carrier. In computing, “infector” can also describe malware designed to spread by infecting files or systems. Because describing a person as an infector may imply deliberate transmission or carry a stigmatizing implication, neutral public-health wording often prefers “source of infection” or “transmitter.” Despite its limited everyday use, the noun is useful because it names the agent of transmission rather than the resulting illness or process.
nounA person, organism, substance, or other agent that causes or transmits an infection. In computing, the term may also refer to a malicious program designed to infect files or systems.
- A person, organism, substance, device, or other agent that causes or transmits an infection.
- A malicious computer program or type of malware designed to infect other files or systems.
"Health officials warned that the infector could remain unnoticed while the outbreak continued."
"The contaminated instrument was identified as the likely infector of the equipment."
"The security update removed several infectors that had entered the system through a compromised application."
The regular plural is used when referring to more than one agent that causes or transmits infection.
"The investigation focused on possible infectors in the shared laboratory equipment."
The rare word “infector” names the culprit: the agent that carries a disease into other people, places, or computer systems.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does infector come from?
The word is based on the English verb “infect,” which comes from Latin inficere, meaning “to taint” or “to stain.” The noun “infector” was formed with the agent suffix “-or,” identifying a person or thing that infects. Its relatives “infection” and “infectious” belong to the same lexical family and preserve the sense of harmful taint or transmission.
Related word forms
How infector is actually used
This is a specialized and relatively uncommon noun. In medical and public-health contexts, it can sound accusatory or stigmatizing when applied to a person; “source of infection” is often more neutral and precise.
Easily confused with infector
An infector is the agent that causes or transmits an infection, whereas an infection is the disease process or condition resulting from it.