ge·​om·​e·​try | \ jē-ˈä-mə-trē How to pronounce geometry (audio) \
plural geometries

Definition of geometry

1a : 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
b : a particular type or system of geometry Euclidean geometry
b : surface shape (as of a mechanical part or a crystal)
3 : an arrangement of objects or parts that suggests geometric figures the geometry of neoclassical architecture

Keep scrolling for more

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

Look for da Vinci’s use of geometry to create a sense of depth beyond the wall. Michael J. Bailey,, "In Milan, a low-tech saunter through a mecca of high fashion," 18 June 2019 All of these skills involve a form of geometry and calculations. Kim Willsher,, "A medieval castle in France could be Notre Dame's salvation," 6 June 2019 What does make sense to me nowadays is the power of geometry within a photograph. Kristen Mcnicholas, National Geographic, "Your best photos of the week, April 26, 2019," 26 Apr. 2019 Sourcing inspiration from Italian designer Gio Ponti’s ceramic majolica tiles, Brooklinen and The Inside played with color and geometry to produce a collection of luxe sheets for every design style. Lucia Tonelli, ELLE Decor, "The Inside and Brooklinen’s New Collaboration is a Design Dream Come True," 25 Apr. 2019 Orange Spin bicycles offer the most comfortable geometry to transmit pedal power, and for taller riders. Mike Lindblom, The Seattle Times, "How reliable are those colorful bike-share bikes on Seattle streets and sidewalks?," 13 July 2018 This is more of an observation than a complaint: any machine of this geometry and with solid, narrow tires will struggle a bit over lawn ruts. Ryan D'agostino, Popular Mechanics, "We Test the Very Best Leaf Blowers You Can Buy," 5 Nov. 2018 To design the Sleepbuds for the most comfortable fit, Bose used 3-D scans to better understand ear geometry. Maya Mcdowell, House Beautiful, "Sleepbuds Are Noise-Masking Wireless Earphones That Are Comfortable Enough For Side Sleepers," 19 Feb. 2019 VMWare Fusion 11 has been updated with DirectX 10.1 compatibility with support for anti-aliasing and geometry and compute shaders. Samuel Axon, Ars Technica, "VMWare Fusion 11 adds support for Core i9 MacBook Pro and 18-core iMac Pro," 25 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geometry.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of geometry

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

History and Etymology for geometry

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

Keep scrolling for more

Learn More about geometry

Statistics for geometry

Last Updated

14 Jul 2019

Look-up Popularity

Time Traveler for geometry

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

See more words from the same century

Keep scrolling for more

More Definitions for geometry



English Language Learners Definition of geometry

: a branch of mathematics that deals with points, lines, angles, surfaces, and solids


ge·​om·​e·​try | \ jē-ˈä-mə-trē How to pronounce geometry (audio) \

Kids Definition of geometry

: a branch of mathematics that deals with points, lines, angles, surfaces, and solids

Keep scrolling for more

Comments on geometry

What made you want to look up geometry? Please tell us where you read or heard it (including the quote, if possible).


food or victuals

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Name That Thing

Test your visual vocabulary with our 10-question challenge!


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!