graph

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The spelling of a word.
• noun Any of the possible forms of a grapheme.
• noun A written character that represents a vowel, consonant, syllable, word, or other expression and that cannot be further analyzed.
• noun A diagram that exhibits a relationship, often functional, between two sets of numbers as a set of points having coordinates determined by the relationship.
• noun A pictorial device, such as a pie chart or bar graph, used to illustrate quantitative relationships.
• transitive verb To represent by a graph.
• transitive verb To plot (a function) on a graph.

from The Century Dictionary.

• noun 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 -grammar
• noun 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.
• To draw a curve representing (a given equation or function).
• To trace graphs.
• noun Any apparatus for duplicating drawings or writings by printing from a gelatinous surface.
• noun A curve as representing an equation or function.
• noun A line drawn through a series of points whose position has been already determined.
• noun A representation by points on or in a lattice.
• noun The point of a link-motion which describes any curve.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Math.) A curve or surface, the locus of a point whose coördinates are the variables in the equation of the locus.
• noun A diagram symbolizing a system of interrelations of variable quantities using points represented by spots, or by lines to represent the relations of continuous variables. More than one set of interrelations may be presented on one graph, in which case the spots or lines are typically distinguishable from each other, as by color, shape, thickness, continuity, etc. A diagram in which relationships between variables are represented by other visual means is sometimes called a graph, as in a bar graph, but may also be called a chart.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A diagram displaying data; in particular one showing the relationship between two or more quantities, measurements or indicative numbers that may or may not have a specific mathematical formula relating them to each other.
• noun mathematics A diagram displaying data, in particular one showing the relationship between two or more variables; specifically, for a function , the set of all tuples .
• noun graph theory An ordered pair , where is a set of elements called vertices (or nodes) and is a set of pairs of elements of , called edges; informally, a set of vertices together with a set edges that join these vertices.
• verb transitive To draw a graph.
• verb transitive, mathematics To draw a graph of a function.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a visual representation of the relations between certain quantities plotted with reference to a set of axes
• verb represent by means of a graph
• verb plot upon a graph