Meaning of CORE in English

CORE

I. ˈkȯr noun

Usage: often attributive

Etymology: Middle English

Date: 14th century

1. : a central and often foundational part usually distinct from the enveloping part by a difference in nature

the core of the city

as

a. : the usually inedible central part of some fruits (as a pineapple) ; especially : the papery or leathery carpels composing the ripened ovary in a pome fruit (as an apple)

b. : the portion of a foundry mold that shapes the interior of a hollow casting

c. : a vertical space (as for elevator shafts, stairways, or plumbing apparatus) in a multistory building

d.

(1) : a mass of iron serving to concentrate and intensify the magnetic field resulting from a current in a surrounding coil

(2) : a tiny doughnut-shaped piece of magnetic material (as ferrite) used in computer memories

(3) : a computer memory consisting of an array of cores strung on fine wires ; broadly : the internal memory of a computer

e. : the central part of a celestial body (as the earth or sun) usually having different physical properties from the surrounding parts

f. : a nodule of stone (as flint or obsidian) from which flakes have been struck for making implements

g. : the conducting wire with its insulation in an electric cable

h. : an arrangement of a course of studies that combines under basic topics material from subjects conventionally separated and aims to provide a common background for all students

core curriculum

i. : the place in a nuclear reactor where fission occurs

2.

a. : a basic, essential, or enduring part (as of an individual, a class, or an entity)

the staff had a core of experts

the core of her beliefs

b. : the essential meaning : gist

the core of the argument

c. : the inmost or most intimate part

honest to the core

3. : a part (as a thin cylinder of material) removed from the interior of a mass especially to determine composition

II. transitive verb

( cored ; cor·ing )

Date: 15th century

: to remove a core from

core an apple

• cor·er noun

III. noun

Etymology: perhaps alteration of Middle English chore chorus, company, perhaps from Latin chorus

Date: 1622

chiefly Scottish : a group of people

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.