adj, noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   Any of a pair of confocal mirrors or lenses

Adjective

1. 1
   Having the same foci not-comparable

Synonyms

All synonyms

approachingcentripetalconcurrentfocalmeetingradial

Example

More examples

"The readiest support for planets' having confocal orbits is their sometimes retrograde motion."

Etymology

From con- + focal.

Related phrases

confocal conicconfocal coordinateconfocal ellipseconfocal ellipsoidal coordinateconfocal hyperbolaconfocal microscopeconfocal microscopyconfocal parabolaconfocal parabolic coordinateconfocal quadricconfocal resonator

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.