noun a diagram showing the interconnections between the components of system (especially an electronic system)

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flow diagram

noun a diagram of the sequence of operations in a computer program or an accounting system
flowchart; flow sheet; flow chart.

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Indicator diagram

. (Steam Engine) See Indicator card, under indicator

Webster 1913

logic diagram

noun a graphical representation of a program using formal logic
logic diagram.

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logical diagram

noun a graphical representation of a program using formal logic
logic diagram.

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radiation diagram

noun graphical representation (in polar or Cartesian coordinates) of the spatial distribution of radiation from an antenna as a function of angle
pattern; radiation pattern.

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tree diagram

noun a figure that branches from a single root
tree.

genealogical tree

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venn diagram

noun a diagram that uses circles to represent mathematical or logical sets pictorially inside a rectangle (the universal set); elements that are common to more than one set are represented by intersections of the circles
Venn diagram.

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venn's diagram

noun a diagram that uses circles to represent mathematical or logical sets pictorially inside a rectangle (the universal set); elements that are common to more than one set are represented by intersections of the circles
Venn diagram.

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wiring diagram

noun a schematic drawing of the wiring of an electrical system