Contact
Contact (kon"takt) , noun
[Latin contactus, from contingere, -tactum, to touch on all sides. See Contingent.]
1.
A close union or junction of bodies; a touching or meeting.
2.
(Geometry) The property of two curves, or surfaces, which meet, and at the point of meeting have a common direction.
3.
(Mining) The plane between two adjacent bodies of dissimilar rock. — Raymond
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.
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.
Collocations (1)
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.