Con"tact (k&obreve;n"tăkt), 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.
2.
(Geom.) 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.
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.
Hear it pronounced