confocal

Adjective

 * 1)  Having the same foci

Translations

 * French:
 * Italian: confocale
 * Manx: co-focusagh
 * Portuguese: confocal
 * Spanish: confocal

Noun

 * 1) Any of a pair of confocal mirrors or lenses

Adjective

 * 1)   having the same foci