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

(Definition of optional from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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 …

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

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

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

[Football.]a play in which a back has a choice of either passing or running with the ball. v.t. to acquire or grant an option on: The studio has optioned his latest novel for film adaptation. to provide with …

If you can choose whether or not to do something, it is optional. Extra credit is always optional; death and taxes are not. When you buy a new car, you can decide which options or choices, you would like.

Jackets are required at the restaurant, but ties are optional. Many optional features are available on this car. Registration is optional, not mandatory.

optional, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary