semimajor axis

1. 1.

   one-half the major axis of an ellipse; the distance from the center of an ellipse to one end

   Broaderaxis

   Part ofmajor axis

Questions about semimajor axis

What does semimajor axis mean?

semimajor axis means "one-half the major axis of an ellipse; the distance from the center of an ellipse to one end".

Is semimajor axis a common word?

semimajor axis is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.