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The central part of fruit, containing the kernels or seeds.
example
the core of an apple or quince
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The heart or inner part of a physical thing
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The center or inner part of a space or area
example
the core of a square
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The most important part of a thing; the essence.
example
the core of a subject
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The portion of a mold that creates an internal cavity within a casting or that makes a hole in or through a casting.
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The bony process which forms the central axis of the horns in many animals.
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Magnetic data storage.
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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 multi-core processor).
example
I wanted to play a particular computer game, which required I buy a new computer, so while the game said it needed at least a dual-core processor, I wanted my computer to be a bit ahead of the curve, so I bought a quad-core.
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The material between surface materials in a structured composite sandwich material.
example
a floor panel with a Nomex honeycomb core
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The inner part of a nuclear reactor in which the nuclear reaction takes place.
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A piece of ferromagnetic material (i.e. soft iron), inside the windings of an electromagnet, that channels the magnetic field.
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A disorder of sheep caused by worms in the liver.
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A cylindrical sample of rock or other materials obtained by core drilling.
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A tiny sample of organic material obtained by means of a fine-needle biopsy.
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The central part of a protein structure consisting in mostly hydrophobic aminoacids.
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The set of feasible allocations that cannot be improved upon by a subset (a coalition) of the economy's agents.
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A hollow cylindrical piece of cardboard around which a web of paper or plastic is winded.
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An atomic nucleus plus inner electrons (i.e. except valence electrons).