core sample


core sample

[′kȯr ‚sam·pəl] (geology) A sample of rock, soil, snow, or ice obtained by driving a hollow tube into the undisturbed medium and withdrawing it with its contained sample or core.

core

core, 6 1. The center of a plywood or crossbanded construction; it may consist of lumber (solid or glued) or particleboard; serves as a base for veneer. 2. The internal structure in a hollow-core door.3. The wood chips cut from a mortise. 4. The metal bar to which a handrail is attached. 5. The internal structure which serves as a base for complex plasterwork. 6. The molded open space in a concrete masonry unit. 7. The filling within a thick hollow stone wall. 8. The filling between a lintel and relieving arches. 9. A cylindrical sample of hardened concrete or rock obtained by means of a core barrel and drill. 10. A part of a multistory building, containing a variety of service and utility functions, as elevators, stairwells, etc. 11. That part of a magnetic circuit (usually steel or iron laminations) about which are wound coils in electromagnetic devices such as transformers, solenoids, relays, etc.; a magnetic core.12. (Brit.) The conductor of a cable with its insulation, but not including any outer protective covering. 13. That portion of a grille, 2 contained within the frame. 14. Of gypsum board, the hardened material filling the space between a face paper and a back paper; consists primarily of gypsum with additives. 15. (British) Same as blockout.