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Euclid

American  
[yoo-klid] / ˈyu klɪd /

noun

  1. flourished c300 b.c., Greek geometrician and educator at Alexandria.

  2. a city in NE Ohio, near Cleveland.


Euclid British  
/ juːˈklɪdɪən, ˈjuːklɪd /

noun

  1. 3rd century bc , Greek mathematician of Alexandria; author of Elements, which sets out the principles of geometry and remained a text until the 19th century at least

  2. the works of Euclid, esp his system of geometry

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Euclid Scientific  
/ yo̅o̅klĭd /
  1. Greek mathematician whose book, Elements, was used continuously until the 19th century. In it he organized and systematized all that was known about geometry. Euclid's systematic use of deductions and axioms was widely regarded as a model working method and influenced mathematicians and scientists for over two thousand years.


Euclid Cultural  
  1. An ancient Greek mathematician; the founder of the study of geometry. Euclid's Elements is the basis for modern school textbooks in geometry. One of the basic statements, or postulates, of Euclid's geometry is that if a line and a point separate from it are given, only one line parallel to the first line can pass through the point.


Discover More

Albert Einstein used other approaches to geometry to derive the theory of relativity. These “non-Euclidean geometries” deny Euclid's postulate about parallel lines.

Other Word Forms

  • Euclidean adjective

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

These include missions such as the European Space Agency's Euclid spacecraft and observations from the Vera C. Rubin Observatory in Chile.

From Science Daily

The two charging stations at the intersection of Euclid Street and Broadway have been a sour point for neighbors since they began operating roughly a year ago.

From Los Angeles Times

Several local residents have complained about round-the-clock beeping and humming emitted by the self-driving cars as they make their way to two charging stations near the intersection of Euclid Street and Broadway.

From Los Angeles Times

The crash occurred shortly after 9 p.m. at a busy commercial district between 14th and Euclid streets.

From Los Angeles Times

Around midday on Saturday, agents in three or four black SUVs and a white van arrived at the Euclid Car Wash, deploying what appeared to be a smoke canister before detaining one person.

From Los Angeles Times