Meaning of CORE in English

CORE

/ kɔː(r); NAmE / noun , adjective , verb

■ noun

1.

the hard central part of a fruit such as an apple, that contains the seeds

—picture at apple

2.

the central part of an object :

the earth's core

the core of a nuclear reactor

3.

the most important or central part of sth :

the core of the argument

Concern for the environment is at the core of our policies.

4.

a small group of people who take part in a particular activity :

He gathered a small core of advisers around him.

—see also hard core

IDIOMS

- to the core

■ adjective

1.

most important; main or essential :

core subjects (= subjects that all the students have to study) such as English and mathematics

the core curriculum

We need to concentrate on our core business .

The use of new technology is core to our strategy.

2.

core beliefs, values, principles, etc. the most important or central beliefs, etc. of a person or group :

The party is losing touch with its core values.

3.

used to describe the most important members of a group :

The team is built around a core group of players.

■ verb

[ vn ] to take out the core of a fruit

••

WORD ORIGIN

Middle English : of unknown origin.

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