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a small group of indispensable persons or things;
"five periodicals make up the core of their publishing program"
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the center of an object;
"the ball has a titanium core"
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the central part of the Earth
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the choicest or most essential or most vital part of some idea or experience;
"the gist of the prosecutor's argument"
"the heart and soul of the Republican Party"
"the nub of the story"
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a cylindrical sample of soil or rock obtained with a hollow drill
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an organization founded by James Leonard Farmer in 1942 to work for racial equality
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the central meaning or theme of a speech or literary work
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(computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories;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"
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the chamber of a nuclear reactor containing the fissile material where the reaction takes place
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a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil
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