Contact level

Contact level
Contact Con"tact (k[o^]n"t[a^]kt), 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. [1913 Webster]

2. (Geom.) The property of two curves, or surfaces, which meet, and at the point of meeting have a common direction. [1913 Webster]

3. (Mining) The plane between two adjacent bodies of dissimilar rock. --Raymond. [1913 Webster]

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. [PJC]

5. A person who serves to commmunicate information to or from one group to another, whether formally or informally; as, a good Washington reporter has contacts in the White House. [PJC]

{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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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