the fatty network of connective tissue that fills the cavities of bones | a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil |
the choicest or most essential or most vital part of some idea or experience | the chamber of a nuclear reactor containing the fissile material where the reaction takes place |
large elongated squash with creamy to deep green skins | (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories |
very tender and very nutritious tissue from marrowbones | the choicest or most essential or most vital part of some idea or experience |
any of various squash plants grown for their elongated fruit with smooth dark green skin and whitish flesh | 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 |