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Definition of Mimetic
Medically reviewed by Min Clinic Staff | Updated: January 2026
Mimetic: The adjective for "mimesis" -- imitation or mimicry.
A radiomimetic drug is one that imitates the effects of radiation as in the case of chemicals such as nitrogen mustards which are used in cancer chemotherapy.
"Mimetic" and "mimesis" come from the Greek verb "mimeisthai" meaning "to imitate" and from "mimos" meaning "mime." (The English word "mime" also comes from "mimos" as do "mimic" and "mimicry.")