Diagram \Di"a*gram\, n. [Gr. ?, fr. ? to mark out by lines; dia`
through + ? to draw, write: cf. F. diagramme. See Graphic.]
1. (Geom.) A figure or drawing made to illustrate a
statement, or facilitate a demonstration; a plan.
2. Any simple drawing made for mathematical or scientific
purposes, or to assist a verbal explanation which refers
to it; a mechanical drawing, as distinguished from an
artistical one.
Indicator diagram. (Steam Engine) See Indicator card,
under indicator
Source: Webster's Revised Unabridged Dictionary (1913)
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