1. the action or process of preparing something or someone in advance for a particular condition, event, or use
Usage: commonly used in technical, medical, and psychological contexts
2. in mathematics and computing, a technique applied to a system of equations or matrix to improve numerical stability or convergence speed
Usage: technical; used in numerical analysis and scientific computing
3. in physiology and medicine, the process of exposing tissue or an organism to mild stress to improve its tolerance to more severe stress
Usage: medical/scientific context

Examples

• The preconditioning of athletes involves gradual exposure to high-altitude training.
• Preconditioning the heart muscle before surgery can reduce damage during the procedure.
• The software uses preconditioning to speed up the convergence of iterative solvers.
• Mental preconditioning helps performers manage anxiety before competitions.
• Preconditioning the concrete surface ensures better adhesion for the new coating.
• The team's preconditioning regimen prepared them for the demanding tournament schedule.