semiminor axis

noun
semi·​mi·​nor axis | \ ˌse-mē-ˈmī-nər- How to pronounce semiminor axis (audio) , ˌse-ˌmī-, -mi-\

Definition of semiminor axis

: one half of the minor axis of an ellipse (such as that formed by the orbit of a planet)

First Known Use of semiminor axis

1909, in the meaning defined above

Keep scrolling for more

Learn More about semiminor axis

Statistics for semiminor axis

Look-up Popularity

Time Traveler for semiminor axis

The first known use of semiminor axis was in 1909

See more words from the same year

More from Merriam-Webster on semiminor axis

Britannica.com: Encyclopedia article about semiminor axis

Comments on semiminor axis

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

WORD OF THE DAY

not constant or steady

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Add Diction

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

TAKE THE QUIZ
Love words? Need even more definitions?

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