constant
n. countablen. something that stays the same and does not change. In math or science, it is a value that is always the same, even when other things around it change. In computing, a constant is a fixed value that a programmer defines once and the computer cannot change while the program is running.
n. a value or quantity that does not vary. In a mathematical or computational context, it represents a fixed data point that remains unchanged throughout a process or calculation. In software development, a constant is a named identifier with a fixed value that remains immutable throughout the execution of a program, unlike a variable.
The speed of light is a physical constant.
In this computer program, the user's ID number is a constant that cannot be edited after registration.
While the variables in the experiment were adjusted daily, the temperature of the laboratory remained a constant to ensure the validity of the results.
Commonly used in scientific, mathematical, and programming contexts to distinguish fixed values from variables.