semiminor axis


semi·​mi·​nor axis ˌse-mē-ˈmī-nər- How to pronounce semiminor axis (audio)
: one half of the minor axis of an ellipse (such as that formed by the orbit of a planet)

Word History

First Known Use

1909, in the meaning defined above

Time Traveler
The first known use of semiminor axis was in 1909

Dictionary Entries Near semiminor axis

Cite this Entry

“Semiminor axis.” Dictionary, Merriam-Webster, Accessed 15 Apr. 2024.

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