simulation

noun

sim·​u·​la·​tion ˌsim-yə-ˈlā-shən 

1

: the act or process of simulating

2

: a sham object : counterfeit

3

a

: the imitative representation of the functioning of one system or process by means of the functioning of another

a computer simulation of an industrial process

b

: examination of a problem often not subject to direct experimentation by means of a simulating device

Examples of simulation in a Sentence

a computer simulation of spaceflight

a simulation of the planet's surface

They use computer simulation to predict weather conditions.

Recent Examples on the Web

While the study used 2D models of the shockwaves, more complex, 3D simulations are needed to fully capture how the club’s structure works, adds Espinosa in the statement. —Sara Hashemi, Smithsonian Magazine, 13 Feb. 2025

In our simulation, the Tennessee Titans selected Colorado QB Shedeur Sanders at No. 1, while the Cleveland Browns took Sanders’ teammate, Colorado cornerback/wide receiver Travis Hunter. —Charlotte Carroll, The Athletic, 13 Feb. 2025

The unique program featured hands-on activities such as Mars robotics, space settlement simulations, and portable planetarium sessions, making the program engaging and accessible to diverse youth across nationalities. —Lauren Carpenter, USA TODAY, 13 Feb. 2025

In computer simulations, Kost and his colleagues have found that nanotubes can support the development of cooperation among groups of bacteria. —Veronique Greenwood, WIRED, 9 Feb. 2025

Word History

Etymology

Middle English simulacioun "insincerity, pretense, deceit," borrowed from Anglo-French simulacion, borrowed from Latin simulātiōn-, simulātiō "act of copying, putting on an appearance, pretense," from simulāre, similāre "to pretend, assume the appearance of by one's conduct, produce a fraudulent imitation of, imitate" + -tiōn-, -tiō, suffix of verbal action — more at simulate

First Known Use

14th century, in the meaning defined at sense 1

Kids Definition

simulation

noun

sim·​u·​la·​tion ˌsim-yə-ˈlā-shən 

1

: the act or process of simulating

2

: an object that is not genuine

3

: the imitation by one system or process of the way in which another system or process works

a computer simulation of spaceflight

Legal Definition

simulation

noun

sim·​u·​la·​tion ˌsim-yə-ˈlā-shən 

1

in the civil law of Louisiana

2

: the act of simulating

3

: a contract that by mutual agreement does not express the true intent of the parties see also counterletter compare disguised donation at donation

Note: Although a simulation does not have effect as between the parties, its lack of effect may not be asserted against third parties, such as creditors or bona fide purchasers, to avoid liability.