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immutable

Adjective

This term conveys a sense of absolute permanence and rigidity. It is often used in formal, philosophical, or scientific contexts to describe laws, truths, or divine decrees that are beyond the reach of human influence or natural decay. In technical computing contexts, it describes a specific architectural constraint where data cannot be altered once instantiated. This differs from "constant" in that immutability refers to the inherent nature of the object rather than just a variable assignment.

Meanings

Adjective

Unable to be changed or modified over time.

"The laws of physics are considered immutable."

Adjective

In computing, referring to an object whose state cannot be modified after it is created.

"The string class in Java is immutable to ensure thread safety."

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Last Updated: June 13, 2026Report an Error