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inclusion |
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inclusion
1. Geology a solid fragment, liquid globule, or pocket of gas enclosed in a mineral or rock 2. Maths a. the relation between two sets that obtains when all the members of the first are members of the second. b. strict or proper inclusion the relation that obtains between two sets when the first includes the second but not vice versa. 3. Engineering a foreign particle in a metal, such as a particle of metal oxide inclusion [in′klü·zhən] (cell and molecular biology) A visible product of cellular metabolism within the protoplasm. (crystallography) A crystal or fragment of a crystal found in another crystal. A small cavity filled with gas or liquid in a crystal. (metallurgy) An impure particle, such as sand, trapped in molten metal during solidification. (petrology) A fragment of older rock enclosed in an igneous rock. inclusion The presence of foreign matter in a finished material. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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