Geometry definition

jē-ŏmĭ-trē
Frequency:
A book about geometry.
noun
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The definition of geometry is a branch of math that focuses on the measurement and relationship of lines, angles, surfaces, solids and points.

An example of geometry is the calculation of a triangle's angles.

noun
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The branch of mathematics that deals with points, lines, planes, and figures, and examines their properties, measurement, and mutual relations in space.
noun
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The mathematical study of the properties, measurement, and relationships of points, lines, planes, surfaces, angles, and solids.
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A system of geometry.

Euclidean geometry.

noun
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A specific system of geometry.
noun
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A physical arrangement suggesting geometric forms or lines.
noun
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The mathematics of the properties, measurement, and relationships of points, lines, angles, surfaces, and solids.
noun
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A geometry restricted to a class of problems or objects.

Solid geometry.

noun
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(mathematics, uncountable) The branch of mathematics dealing with spatial relationships.
noun
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(mathematics, countable) A type of geometry with particular properties.

Spherical geometry.

noun
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A book on geometry.
noun
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(countable) The spatial attributes of an object, etc.
noun
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Configuration; arrangement.
noun
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A surface shape.
noun
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Other Word Forms

Noun

Singular:
geometry
Plural:
geometries

Origin of geometry

  • Middle English geometrie from Old French from Latin geōmetria from Greek geōmetriā from geōmetrein to measure land geō- geo- metron measure mē-2 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French géométrie, from Latin geometria, from Ancient Greek γεωμετρία (geometría, “geometry, land-survey”), from γεωμετρέω (geometréo, “to practice or to profess geometry, to measure, to survey land”), back-formation from γεωμέτρης (geométrēs, “land measurer”), from γῆ (gē, “earth, land, country”) + μετρέω (metréō, “to measure, to count”) or -μετρία (-metria, “measurement”), from μέτρον (metron, “a measure”).

    From Wiktionary