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Core generally is the heart or inner part of a thing, as of a column, wall, rope, of a boil, etc.; especially, the central part of fruit, containing the kernels or seeds; as, the core of an apple or quince.

Core could mean:

In media:

In science and academics:

  • Core (group), in mathematics, an object in group theory
  • Core (functional analysis), in mathematics, a subset of the domain of a closable operator
  • core (graph theory), in mathematics, the homomorphically minimal subgraph of a graph
  • core of a triangulated category in mathematics.
  • Core (economics), the collection of stable allocations that no coalition can improve upon
  • Planetary core, in planetary science, the center of a planet
  • Solar core, the region of the Sun where nuclear fusion takes place
  • Lithic core, in archaeology, a stone artifact left over from toolmaking
  • Core curriculum, in education, an essential part of the curriculum
  • Core sample, in Earth science, a sample obtained by coring
  • Core countries, in dependency theory, an industrialized country on which peripheral countries depend
  • Core (anatomy), in anatomy is everything except the appendages.

In computers and technology: