a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil | the most common computer memory which can be used by programs to perform necessary tasks while the computer is on; an integrated circuit memory chip allows information to be stored or accessed in any order and all storage locations are equally accessible |
the chamber of a nuclear reactor containing the fissile material where the reaction takes place | |
(computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories | |
the choicest or most essential or most vital part of some idea or experience | |
the central meaning or theme of a speech or literary work | |
a small group of indispensable persons or things | |
the center of an object | |
the central part of the Earth | |
a cylindrical sample of soil or rock obtained with a hollow drill | |