core¹ /kör or kōr/

1. In an apple, pear, etc, the central casing containing the seeds
2. The innermost or most essential part of something (also adjective)
3. The central part of the earth (geology)
4. A cylindrical sample of rock, soil, etc extracted by driving a hollow-core drill into strata
5. The lump of stone or flint remaining after flakes have been struck off it (archaeology)
6. The part of a nuclear reactor containing the fissile material
7. (also magnetic core) a small ferromagnetic ring which, either charged or uncharged by electric current, can thus assume two states corresponding to the binary digits 0 and 1 (computing)
8. A solid mass of specially prepared sand or loam placed in a mould to provide a hole or cavity in metal casting
9. A computer memory made up of a series of three rings (also core store, core memory)

To take out the core of (an apple, etc)

cored adjective

1. Having the core removed
2. Cast by means of a core
3. Having a core

coreˈless adjective

1. Without a core
2. Pithless
3. Hollow

corˈer noun

A device for removing the core of an apple, etc

core curriculum see under curriculum

core dump noun (computing)

The transfer of the contents of main memory to disk, usu made when debugging

core store or core memory noun (computing) see core (n) above.

core temperature noun (biology)

The temperature towards the middle of an organism which is unaffected by the outside temperature

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