WordWeb Online

1. A small group of indispensable persons or things
   "five periodicals make up the core of their publishing program";
   - nucleus, core group
    
2. The centre of an object
   "the ball has a titanium core"
    
3. The central part of the Earth
    
4. The choicest or most essential or most vital part of some idea or experience
   "the core of the prosecutor's argument";
   - kernel, substance, center [US], centre [Brit, Cdn], essence, gist, heart, heart and soul, inwardness, marrow, meat, nub, pith, sum, nitty-gritty
    
5. A cylindrical sample of soil or rock obtained with a hollow drill
    
6. The central meaning or theme of a speech or literary work
   - effect, essence, burden, gist
    
7. (computing) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories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";
   - magnetic core
    
8. The chamber of a nuclear reactor containing the fissile material where the reaction takes place
    
9. A bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil

1. Remove the core or centre from
   "core an apple"

1. An organization founded by James Leonard Farmer in 1942 to work for racial equality
   - Congress of Racial Equality

Sounds like: caw, cor, corps, kor

Derived forms: cored, cores, coring

Type of: bar, center [US], centre [Brit, Cdn], chamber, cognitive content, content, core out, hollow, hollow out, import, meaning, mental object, midpoint, NGO, nongovernmental organisation [Brit], nongovernmental organization, sample, set, significance, signification, toroid, torus

Part of: core memory, magnet, magnetic core memory, nuclear reactor, RAM, random access memory, random memory, random-access memory, reactor, read/write memory

Encyclopedia: Core, San Diego, California