principal axis

1. 1.

   a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted

   “in a normal eye the optic axis is the direction in which objects are seen most distinctly”

   Synonymsoptic axis

   Broaderaxis

Questions about principal axis

What does principal axis mean?

principal axis means "a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted".

What is another word for principal axis?

Close synonyms include optic axis. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is principal axis a common word?