Kepler's law
noun Astronomy.
any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas ); or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet's orbit (harmonic law ).
QUIZZES
TAKE THIS QUIZ IF A DAZZLING VOCABULARY IS YOUR DESIDERATUM!
Have the Words of the Day from October 19–25, 2020, made an indelible mark on your memory? Take the quiz to find out!
Question 1 of 7
What does “clement” mean?
Origin of Kepler's law
after J. Kepler
Words nearby Kepler's law
Kephalos, Kepheus, kepi, Kepler, Kepler, Johannes, Kepler's law, Kepler's laws, Kepler's laws of planetary motion, Kepler telescope, kept, ker-
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020