pro·​grade | \ ˈprō-ˌgrād How to pronounce prograde (audio) \

Definition of prograde

: having or being a direction of rotation or revolution that is counterclockwise as viewed from the north pole of the sky or a planet

Examples of prograde in a Sentence

Recent Examples on the Web

Sending a spacecraft to gently land upon or orbit the object would be extremely difficult, as such a probe would have to burn huge amounts of fuel to cancel out its prograde velocity. Lee Billings, Scientific American, "Astronomers Spot Potential "Interstellar" Asteroid Orbiting Backward around the Sun," 21 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'prograde.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of prograde

1707, in the meaning defined above

History and Etymology for prograde

Latin pro- forward + English -grade (as in retrograde)

Keep scrolling for more

Learn More about prograde

Statistics for prograde

Look-up Popularity

Time Traveler for prograde

The first known use of prograde was in 1707

See more words from the same year

More from Merriam-Webster on prograde

Britannica English: Translation of prograde for Arabic Speakers

Comments on prograde

What made you want to look up prograde? Please tell us where you read or heard it (including the quote, if possible).


to affect and impair by alcohol or a drug

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
Spell It

Can you spell these 10 commonly misspelled words?


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

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