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* (anthropology, archaeology) 
# a blocky nucleus of stone from which flakes or blades have been removed. 
# a column or lineal sample of materials obtained by "coring" the ground, trees, etc.
* (chemistry) The central portion of a nuclear reactor containing the fuel elements, moderator, neutron poisons, and support structures. Source: U.S. Nuclear Regulatory Commission
* (environment) The uranium-containing heart of a nuclear reactor, where energy is released. <br/>Source: [http://www.epa.gov/OCEPAterms/ Terms of the Environment]

[[Category: Anthropology]]
[[Category: Archaeology]]
[[Category: Chemistry]]
[[Category: Environment]]