ge·​om·​e·​try jē-ˈä-mə-trē How to pronounce geometry (audio)
plural geometries
: a branch of mathematics that deals with the measurement, properties, and relationships of points, lines, angles, surfaces, and solids
broadly : the study of properties of given elements that remain invariant under specified transformations
: a particular type or system of geometry
Euclidean geometry
: configuration
… the [bicycle] frame's geometry can be adjusted via a two-position lower shock mount which slackens the angles by another half a degree.Liam Mercer
: surface shape
the geometry of the landscape
The shape of the earbud is tailored to the geometry of your ear.Noah Robischon
The Ken Onion also allows you to choose the type of blade geometry for whatever implement you're sharpening …Ariel Kanter
Every object naturally resonates when hit by electromagnetic waves of particular frequencies, which are determined by the object's geometry and material properties.Ada Poon
: an arrangement of objects or parts that suggests geometric figures
the geometry of neoclassical architecture

Examples of geometry in a Sentence

the geometry of Sydney's famed opera house is suggestive of some modernistic sailing ship
Recent Examples on the Web While the Archangel has a sportbike heart, the suspension geometry is long and low, with handling characteristics to match. William Roberson, Forbes, 21 Feb. 2024 The sculpted roof lines create a simple but striking geometry that allows anyone to occupy the open floor plan effortlessly, Little says. Lisa Boone, Los Angeles Times, 20 Feb. 2024 Qian was studying random geometry in the continuous rather than discrete context, with a special focus on SLE curves. Quanta Magazine, 7 Feb. 2024 Ok, having said all of that, probably the biggest research news in the past week was Google DeepMind’s publication in Nature of its work on a system that can solve complex geometry problems from the International Mathematics Olympiad about as well as human competitors. Jeremy Kahn, Fortune, 23 Jan. 2024 The exhibit, in collaboration with David Lusk Gallery, runs through Oct. 27, and is described in a press release as manifesting a playful take on the confines of geometry. Katie Toussaint, Charlotte Observer, 31 Jan. 2024 Stars show off some special geometry on winter nights. Lisa M. Krieger, The Mercury News, 23 Jan. 2024 Antonio Stradivari, for instance, carefully tinkered with the geometry of his violins—the relative concavity of the back and the front, the thickness of the wood—to produce his legendary results. Chris Almeida, The New Yorker, 6 Jan. 2024 Teti, who is studying fractal geometry for the fun of it and using computers to create music and art, turned 100 in November and told me not to fret about the state of the world, which will always cycle through the good and the bad. Steve Lopez, Los Angeles Times, 3 Jan. 2024 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'geometry.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Middle English geometrie, from Anglo-French, from Latin geometria, from Greek geōmetria, from geōmetrein to measure the earth, from geō- ge- + metron measure — more at measure

First Known Use

14th century, in the meaning defined at sense 1a

Time Traveler
The first known use of geometry was in the 14th century

Dictionary Entries Near geometry

Cite this Entry

“Geometry.” Dictionary, Merriam-Webster, Accessed 3 Mar. 2024.

Kids Definition


ge·​om·​e·​try jē-ˈäm-ə-trē How to pronounce geometry (audio)
plural geometries
: a branch of mathematics that deals with points, lines, angles, surfaces, and solids
: shape entry 2
the geometry of a crystal

More from Merriam-Webster on geometry

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