optional Definition in the Cambridge English Dictionary Cambridge dictionaries logo
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Definition of “optional” - English Dictionary

"optional" in American English

See all translations

optionaladjective [not gradable]

 us   /ˈɑp·ʃə·nəl/
not necessary or demanded but possible or available; depending on what you decide to do: I think military service should be completely optional.
(Definition of optional from the Cambridge Academic Content Dictionary © Cambridge University Press)







"optional" in British English

See all translations

optionaladjective

uk   /ˈɒp.ʃən.əl/  us   /ˈɑːp.ʃən.əl/
B2 If something is optional, you can choose if you want to do it, pay it, buy it, etc.: English is compulsory for all students, but art and music are optional.

expend iconexpend iconMore examples

(Definition of optional from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

"optional" in Business English

See all translations

optionaladjective

uk   us   /ˈɒpʃənəl/
COMMERCE something that is optional is something that you can buy or do if you want to, but that you do not have to buy or do: Optional plug-ins cost a further $50 on average. optional accessories/components
optional extra
COMMERCE, MARKETING something that can be added, at extra cost, to a basic product or service to make it more attractive, efficient, etc.: Some car manufacturers offer advanced stereo systems as an optional extra on their more expensive models.
(Definition of optional from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of optional?
Add Cambridge dictionaries to your browser to your website

“optional” in Business English

A bunch of stuff about plurals
A bunch of stuff about plurals
by ,
May 24, 2016
by Colin McIntosh One of the many ways in which English differs from other languages is its use of uncountable nouns to talk about collections of objects: as well as never being used in the plural, they’re never used with a or an. Examples are furniture (plural in German and many other languages), cutlery (plural in Italian), and

Read More 

Word of the Day

parasol

a type of sunshade (= round frame covered in cloth on a stick) carried especially by women in the past, to give protection from the sun

Word of the Day

convo noun
convo noun
May 23, 2016
informal a conversation The convo around concussions mostly focuses on guys who play football, but Chastain thinks that this whole thing could be a headache for women too.

Read More