pre-exposure

adjective

pre-ex·​po·​sure ˌprē-ik-ˈspō-zhər 

variants or less commonly preexposure

: occurring, administered, used, or being in the period preceding exposure (as to a stimulus or a pathogen)

pre-exposure rabies vaccination

Canon has also added a red-eye reduction pre-exposure light …

—Herbert Keppler

see also pre-exposure prophylaxis

pre-exposure noun

Rats differ from monkeys and chicks in that simultaneous pre-exposure to two stimuli does facilitate their subsequent discrimination …

—R. A. Hinde

Word History

First Known Use

1906, in the meaning defined above

Medical Definition

pre-exposure

adjective

pre-ex·​po·​sure -ik-ˈspō-zhər 

variants preexposure

: of, relating to, occurring in, or being the period preceding exposure (as to a stimulus or a pathogen)

pre-exposure immunization