optional
suomi-englanti sanakirjaoptional englannista suomeksi
valinnainen
Substantiivi
optional englanniksi
Not compulsory; left to personal choice; elective.
(syn)
(ant)
(ux)
Something that is not compulsory, especially part of an academic course.
In various languages, a kind of variable that is assigned a specific type but may or may not hold an actual value.
(quote-book)
(l) accessory
handicap (horse racing)