GNU Collaborative International Dictionary of English

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Found one definition

1.       
   Contact (kŏnˈtăkt), n. [L. contactus, fr. contingere, -tactum, to touch on all sides. See Contingent.]
   1. A close union or junction of bodies; a touching or meeting.
   
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   2. (Geom.) The property of two curves, or surfaces, which meet, and at the point of meeting have a common direction.
   
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   3. (Mining) The plane between two adjacent bodies of dissimilar rock.  Raymond.
   
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   4. (Electricity) A metallic conducting component of an electrical device connected to a circuit within and so situated that it may form a conducting pathway to an external power source or device when contacted by another conductor; as, “the contact on a standard light bulb has the shape of a screw for easy insertion into the socket”.
   
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   5. A person who serves to communicate information to or from one group to another, whether formally or informally; as, “a good Washington reporter has contacts in the White House”.
   
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   Contact level, a delicate level so pivoted as to tilt when two parts of a measuring apparatus come into contact with each other; -- used in precise determinations of lengths and in the accurate graduation of instruments.
   
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