Confocal
/kənˈfoʊkəl/ adj, noun
adj, noun ·Rare ·Advanced level
Definitions
Noun
- 1 Any of a pair of confocal mirrors or lenses
Adjective
- 1 Having the same foci not-comparable
Example
More examples"The readiest support for planets' having confocal orbits is their sometimes retrograde motion."
Etymology
From con- + focal.