Nomogram definitions

näməgram, nōməgram
A graphical representation of a set of scales for the variables in a problem, so positioned that a straight line connecting the known values on some scales will provide the unknown values at its intersections with other scales.
noun
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(mathematics) A diagram in which the relationship between three variables is represented by a straight line or curve for each variable; the value of the third variable corresponding to particular values of the first two is obtained by drawing a straight line through the points on the first two curves that represent particular values of the first two variables and noting the point at which the line intersects the third line or curve.
noun
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Origin of nomogram

Formed as nom- +"Ž -o- +"Ž -gram, by analogy with French nomogramme.