11-letter words starting with foca
- focal depth — lens: distance of sharp focus
- focal plane — a plane through a focal point and normal to the axis of a lens, mirror, or other optical system. Compare principal plane.
- focal point — Also called principal focus. Optics. either of two points on the axis of a mirror, lens, or other optical system, one point being such that rays diverging from it are deviated parallel to the axis upon refraction or reflection by the system and the other point being such that rays parallel to the axis of the system converge to the point upon refraction or reflection by the system.
- focal ratio — f-number.
On this page, we collect all 11-letter words starting with FOCA. It’s easy to find right word with a certain length. It is the easiest way to find 11-letter word that beginning with FOCA to use in Scrabble or Crossword puzzles.