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# minor axis

noun, Mathematics.
1.
the axis of an ellipse that is perpendicular to the major axis at a point equidistant from the foci.
Origin of minor axis
1860-1865
First recorded in 1860-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for minor axis
Historical Examples
• We must now get the diameter of the minor axis, along the line B.

J. S. Zerbe
• Surface armed with very numerous (sixty to eighty) strong conical spines, about as long as the minor axis of the shell.

• Polar spines sharp edged, more or less curved, the shorter equal to the minor axis, the longer twice as long.

• minor axis twice as long as the diameter of the inner spherical shell, which has regular, simple, circular pores of half the size.

• Polar spines short and thick, conical, only one-fourth to one-sixth as long as the minor axis, and quite as thick.

• Polar spines three-sided pyramidal, about as long as the minor axis, as broad at the base as one hexagonal frame.

• The minor axis or greatest breadth is about one-half the major axis or length.

David Todd
• Draw the line a b, the major axis, and at a right angle to it the line c d, the minor axis of the figure.

Joshua Rose
• Its form is that of an ellipsoid, with a major axis 26 millimetres in length, while the minor axis measures 11 millimetres.

J. Henri Fabre
• The major axis of the lower surface averages half an inch in length and the minor axis a quarter of an inch.

Jean Henri Fabre
British Dictionary definitions for minor axis

## minor axis

noun
1.
the shorter or shortest axis of an ellipse or ellipsoid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition