Meaning of UNKNOWN in English

UNKNOWN

/ ˌʌnˈnəʊn; NAmE -ˈnoʊn/ adjective , noun

■ adjective

1.

unknown (to sb) not known or identified :

a species of insect previously unknown to science

He was trying, for some unknown reason , to count the stars.

The man's identity remains unknown.

2.

( of people ) not famous or well known :

an unknown actor

The author is virtually unknown outside Poland.

3.

never happening or existing :

The disease is as yet unknown in Europe (= there have been no cases there) .

It was not unknown for people to have to wait several hours (= it happened sometimes) .

IDIOMS

- an unknown quantity

- unknown to sb

■ noun

1.

the unknown [ sing. ] places or things that are not known about :

a journey into the unknown

a fear of the unknown

2.

[ C ] a person who is not well known :

A young unknown played the leading role.

3.

[ C ] a fact or an influence that is not known :

There are so many unknowns in the proposal.

4.

[ C ] ( mathematics ) a quantity that does not have a known value :

X and Y in the equation are both unknowns.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.