Etym. environmental (adj.) 1887, “environing, surrounding,” from environment + -al (1). Ecological sense by 1967.
Related: Environmentally
Etym. fidelity (n.) early 15c., “faithfulness, devotion,” from Middle French fidélité (15c.), from Latin fidelitatem (nominative fidelitas) “faithfulness, adherence, trustiness,” from fidelis “faithful, true, trusty, sincere,” from fides “faith.” From 1530s as “faithful adherence to truth or reality;” specifically of sound reproduction from 1878.
Definition
The degree to which the simulated environment (manikin, room, tools, equipment, moulage, and sensory props) replicates reality and appearance of the real environment.
See also: FIDELITY, HIGH FIDELITY SIMULATION, PHYSICAL FIDELITY, REALISM