Definition of semiminor axis
: one half of the minor axis of an ellipse (as that formed by the orbit of a planet)
First Known Use of semiminor axis
Learn More about semiminor axis
Britannica.com: Encyclopedia article about semiminor axis
Seen and Heard
What made you want to look up semiminor axis? Please tell us where you read or heard it (including the quote, if possible).