semiminor axis

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noun semi·mi·nor axis \ ˌse-mē-ˈmī-nər- , ˌse-ˌmī- , -mi- \
Updated on: 11 Sep 2017

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


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