The meaning of OPTIONAL is involving an option : not compulsory. How to use optional in a sentence.

OPTIONAL definition: 1. If something is optional, you can choose if you want to do it, pay it, buy it, etc.: 2. If…. Learn more.

The class template std::optional manages an optional contained value, i.e. a value that may or may not be present. A common use case for optional is the return value of a function that may fail. As …

OPTIONAL definition: left to one's choice; not required or mandatory. See examples of optional used in a sentence.

Define optional. optional synonyms, optional pronunciation, optional translation, English dictionary definition of optional. adj. Left to choice; not compulsory or automatic. op′tion·al·ly adv. American …

Definition of optional adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

optional in American English (ˈɑpʃənəl ) adjective left to one's option, or choice; not compulsory; elective

leaving something to choice. op′tion•al′i•ty, n. 1. . discretional, elective, voluntary. op•tion /ˈɑpʃən/ n. the power or right of choosing:[uncountable] to have no option but to stay. choice:[countable] Your …

Jan 20, 2026 · Noun optional (plural optionals) Something that is not compulsory, especially part of an academic course. (programming, sometimes capitalized) In various programming languages, a kind …

Optional refers to something that is not compulsory or required, and can be chosen at one's own discretion or preference. It offers the freedom to decide whether to follow, participate, include, or …