Klein bottle


: a one-sided surface that is formed by passing the narrow end of a tapered tube through the side of the tube and flaring this end out to join the other end

Example Sentences

Recent Examples on the Web The implication is that, in some strange sense, the outside of a black hole was the same as the inside, like a Klein bottle that has only one side. Dennis Overbye, New York Times, 10 Oct. 2022 One of the strangest, first described in 1882, may be the Klein bottle. Devin Powell, Discover Magazine, 20 Mar. 2019

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

Word History


Felix Klein †1925 German mathematician

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of Klein bottle was in 1941

Dictionary Entries Near Klein bottle

Cite this Entry

“Klein bottle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Klein%20bottle. Accessed 8 Jun. 2023.

Love words? Need even more definitions?

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