core

If you're looking for the most essential part or the very center of something, you're looking for its core. Like the inedible middle of an apple or your inner circle of core friends.

In the late 14th century, the noun core came about from the Old French coeur, meaning “core of fruit” and more literally, “heart.” So the core of something is its very heart, whether you're talking about the seed-containing center of a fruit, the central meaning of a book, or the core courses you need to take in order to graduate.

PRIMARY MEANINGS OF: core

1
nv
the center of an object
remove the core or center from
2
n
the choicest or most essential or most vital part of some idea or experience
3
n
a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil
4
n
the chamber of a nuclear reactor containing the fissile material where the reaction takes place
FULL DEFINITIONS OF: core
1

n the center of an object

“the ball has a titanium core
Types:
corn cob, corncob
the hard cylindrical core that bears the kernels of an ear of corn
Type of:
center, centre, midpoint
a point equidistant from the ends of a line or the extremities of a figure

n the central part of the Earth

Type of:
center, centre, midpoint
a point equidistant from the ends of a line or the extremities of a figure

n a cylindrical sample of soil or rock obtained with a hollow drill

Type of:
sample
all or part of a natural object that is collected and preserved as an example of its class

v remove the core or center from

core an apple”
Type of:
core out, hollow, hollow out
remove the interior of
2

n the choicest or most essential or most vital part of some idea or experience

Synonyms:
center, centre, essence, gist, heart, heart and soul, inwardness, kernel, marrow, meat, nitty-gritty, nub, pith, substance, sum
Types:
show 5 types...
hide 5 types...
bare bones
(plural) the most basic facts or elements
hypostasis
(metaphysics) essential nature or underlying reality
haecceity, quiddity
the essence that makes something the kind of thing it is and makes it different from any other
quintessence
the purest and most concentrated essence of something
stuff
a critically important or characteristic component
Type of:
cognitive content, content, mental object
the sum or range of what has been perceived, discovered, or learned

n a small group of indispensable persons or things

“five periodicals make up the core of their publishing program”
Synonyms:
core group, nucleus
Types:
cadre
a nucleus of military personnel capable of expansion
Type of:
set
a group of things of the same kind that belong together and are so used

n the central meaning or theme of a speech or literary work

Synonyms:
burden, effect, essence, gist
Type of:
import, meaning, significance, signification
the message that is intended or expressed or signified
3

n a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil

Type of:
bar
a rigid piece of metal or wood; usually used as a fastening or obstruction or weapon

n (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories

“each core has three wires passing through it, providing the means to select and detect the contents of each bit”
Synonyms:
magnetic core
Type of:
toroid, torus
a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
4

n the chamber of a nuclear reactor containing the fissile material where the reaction takes place

Type of:
chamber
a natural or artificial enclosed space
WORD FAMILY
USAGE EXAMPLES