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Definition of kepler

kepler

/ˈkɛp.lɚ/
Kep · ler
Plural:Keplers
•
Adjective:Keplerian
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kepler Lexical Profile

• noun

1

Johannes Kepler (1571–1630), a German astronomer, mathematician, and astrologer who is best known for discovering the three major laws of planetary motion.

Example

"Kepler fundamentally changed our understanding of the solar system by proving that planets move in elliptical orbits rather than perfect circles."

2

A retired space telescope launched by NASA in 2009, designed to discover Earth-size planets orbiting other stars in the Milky Way.

Example

"Before its mission concluded in 2018, Kepler discovered thousands of exoplanets in our galaxy."

Word Nuance & Usage

Frequently used attributively in astronomy and physics contexts, most notably in 'Kepler's laws' of planetary motion.

• Nearby Words

kenya
kenyan sand boa
kepel
kepler
kepler falls
keratin
kerchief

Word Origin & Etymology

Derived from the German surname 'Kepler' (or 'Käppler'), originally an occupational name for a maker of caps or hoods, from the Middle High German 'kappe' (cap). It is most famously associated with the 17th-century astronomer Johannes Kepler.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Kepler. In Wordmom Dictionary. Retrieved Nov 2, 2026, from https://wordmom.com/dictionary/kepler
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