| major axis n. The longer of the two lines about which an ellipse is symmetrical; the axis that passes through both focuses of an ellipse. |
major axis
n
(Mathematics) the longer or longest axis of an ellipse or ellipsoid
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  major axis - the longest axis of an ellipse or ellipsoid; passes through the two fociaxis - a straight line through a body or figure that satisfies certain conditions semimajor axis - one-half the major axis of an ellipse; the distance from the center of an ellipse to one end |
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