n. A diagrammatic representation of a system of connections by means of a number of spots, which may be all distinguished from one another, some pairs of these spots being connected by lines all of which are of one kind.n. A terminal element in compounds of Greek origin, denoting that which writes, marks, or describes something, as in chronograph, telegraph, seismograph, etc., or, passively, that which is written, as in autograph, electrograph, etc. In the passive use the stricter form is -grammarn. A curve as representing an equation or function.n. A line drawn through a series of points whose position has been already determined.n. A representation by points on or in a lattice.n. The point of a link-motion which describes any curve.To draw a curve representing (a given equation or function).To trace graphs.n. Any apparatus for duplicating drawings or writings by printing from a gelatinous surface.