The most important part of a thing or aggregate of things wherever located and whether of any determinate location at all; the essence.
A piece of ferromagnetic material (e.g., soft iron), inside the windings of an electromagnet, that channels the magnetic field.
The bony process which forms the central axis of the horns in many animals.
The set of feasible allocations that cannot be improved upon by a subset (a coalition) of the economy's agents.
A tiny sample of organic material obtained by means of a fine-needle biopsy.
An atomic nucleus plus inner electrons (i.e., an atom, except for its valence electrons).
A deposit paid by the purchaser of a rebuilt part, to be refunded on return of a used, rebuildable part, or the returned rebuildable part itself.
A disorder of sheep caused by worms in the liver.
The portion of a mold that creates an internal cavity within a casting or that makes a hole in or through a casting.
Used to designate the main and most diverse monophyletic group within a clade or taxonomic group.
The anatomical core, muscles which bridge abdomen and thorax.
An individual computer processor, in the sense when several processors (called cores or CPU cores) are plugged together in one single integrated circuit to work as one (called a multi-core processor).
The central part of a protein's structure, consisting mostly of hydrophobic amino acids.
A cylindrical sample of rock or other materials obtained by core drilling.
The heart or inner part of a physical thing.
The central fissile portion of a fission weapon.
A hollow cylindrical piece of cardboard around which a web of paper or plastic is wound.
The center or inner part of a space or area.
The central part of a fruit, containing the kernels or seeds.
The inner part of a nuclear reactor, in which the nuclear reaction takes place.
A miner's underground working time or shift.
The material between surface materials in a structured composite sandwich material.
Forming the most important or essential part.
To cut or drill through the core of (something).
To remove the core of an apple or other fruit.
To extract a sample with a drill.
Significance, importance.
The practice of importing.
Something brought in from an exterior source, especially for sale or trade.
A foreigner playing in a sports league.
To be incumbent on (someone to do something).
To mean, signify.
To be important; to be significant; to be of consequence.
To load a file into a software application from another version or system.
To bring (something) in from a foreign country, especially for sale or trade.
To be important or crucial to (that something happen).
To be of importance to (someone or something).