semimajor axis

See also: semi-major axis

English

Alternative forms

• semi-major axis

Etymology

From semi- +‎ major axis.

Noun

semimajor axis (plural semimajor axes)

1. (geometry) Half of the major axis of a circle or ellipse.

   Coordinate term: semiminor axis

2. (geometry) Half of the distances between the two branches of a hyperbola.

Translations

half of the major axis of a circle or ellipse

• French: demi-grand axe (fr) m
• German: Ellipsenhalbachse f, Halbachse f der Ellipse
• Turkish: ana eksen, büyük eksen

half of the distances between the two branches of a hyperbola