Tycho

American

[tahy-koh] / ˈtaɪ koʊ /

noun

a prominent crater in the third quadrant of the face of the moon, about 56 miles (90 km) in diameter.

Tycho British

/ ˈtaɪkəʊ /

noun

a relatively young crater in the SW quadrant of the moon, 4 km deep and 84 km in diameter, with a central peak. It is the centre of a conspicuous system of rays

"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

Etymology

Origin of Tycho

named after Tycho _Brahe

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.

See Examples For:

Tycho

This process explains why ancient craters lack bright rays, while younger ones like Tycho, which formed about 108 million years ago, still display prominent streaks visible from Earth.

From Science Daily ● Apr. 8, 2026

Lyons and others are being represented by Tycho & Zavareei, a leading consumer protection class-action law firm, as well as L.A.-based Clarkson Law.

From Los Angeles Times ● May 22, 2023

They also commonly look like the Tycho Supernova, which looks like a sphere of jumbled knots.

From Scientific American ● Feb. 1, 2023

Tycho Van Hauwaert, a circular economy expert at environmental group BBL, said he expects more stores will join the Green Friday trend as consumers make the link between their purchasing behaviour and climate change.

From Reuters ● Nov. 25, 2022

Astronomical instruments designed by Tycho Brahe serve as decorations.

From "The Invention of Science" by David Wootton

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023