reserved word

noun

a word in a programming language or computer system that has a fixed meaning and therefore cannot be redefined by a programmer

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Using “royal” in a trademark was difficult, as it is a reserved word, closely guarded, and anyone trademarking it might need official permission, Haigh said.