Etym. late 14c., “an overseer, guardian, steward,” from Latin actor “an agent or doer,” also “theatrical player,” from past participle stem of agere. Sense of “one who performs in plays” is 1580s, originally applied to both men and women.
Definition
• In health care simulation, professional and/or amateur people trained to reproduce the components of real clinical experience, especially involving communication between health professionals and patients or colleagues (Australian Society for Simulation in Healthcare).