core
noun
1. a small group of indispensable persons or things
- five periodicals make up the core of their publishing program
Similar word(s): nucleus
Definition categories: group, set
2. the center of an object
- the ball has a titanium core
Definition categories: location, center, centre, midpoint
3. the central part of the Earth
Definition categories: object, center, centre, midpoint
4. the choicest or most essential or most vital part of some idea or experience
Similar word(s): center, centre, essence, gist, heart, inwardness, kernel, marrow, meat, nub, pith, substance, sum
Definition categories: thought, content
5. a cylindrical sample of soil or rock obtained with a hollow drill
Definition categories: object, sample
6. an organization founded by James Leonard Farmer in 1942 to work for racial equality
Definition categories: group
7. the central meaning or theme of a speech or literary work
Similar word(s): burden, effect, essence, gist
Definition categories: communication, import, meaning, significance, signification
8. (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories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
Definition categories: man–made, toroid, torus
9. the chamber of a nuclear reactor containing the fissile material where the reaction takes place
Definition categories: man–made, chamber
10. a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil
Definition categories: man–made, bar
Sentences with core as a noun:
- the core of an apple or quince
- the core of a subject
- I wanted to play a particular computer game, which required I buy a new computer, so while the game said it needed at least a dual-core processor, I wanted my computer to be a bit ahead of the curve, so I bought a quad-core.
- a floor panel with a Nomex honeycomb core