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:

• Core (album), an album by Stone Temple Pilots
• Core (Persefone album)
• Core (radio station), a digital radio station in the United Kingdom
• The Core, a 2003 science fiction film
• Core Design, a videogame developer best known for the Tomb Raider series
• C.O.R.E., a computer animation studio

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
  • Earth's core
• 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:

• Semiconductor intellectual property core, part of a CPU design
• Multi-core (computing), a type of microprocessor design in which multiple processors coexist on the same chip
• Intel Core, in processors, a brand of computer processor
• Magnetic core memory, in computing, the primary memory
• Core dump, in computing, a record of the core memory
• Nuclear reactor core, a portion containing the fuel components
• Magnetic core, in electricity and electronics, ferromagnetic material around which wires are wound
• the signal-carrying portion of an optical fiber

Acronyms:

• Central Organization For Railway Electrification, an organization in India
• Congress of Racial Equality, United States civil rights organization
• Coordinated Online Register of Electors, central database in the United Kingdom
• Challenge of Reverse Engineering, a warez group
• Comment on Reproductive Ethics, a Christian pressure group in the United Kingdom