minor axis

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noun Mathematics.

the axis of an ellipse that is perpendicular to the major axis at a point equidistant from the foci.

Origin of minor axis

First recorded in 1860–65
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British Dictionary definitions for minor axis

minor axis

noun

the shorter or shortest axis of an ellipse or ellipsoid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012