T1R1I1F4O1C3A1L1
13 points
TRIFOCAL is validvalid
a type of lens [n TRIFOCALS]
of a lens, giving near, intermediate and far vision [adj] / a trifocal lens [n -S]
a type of lens [n TRIFOCALS]
of a lens, giving near, intermediate and far vision [adj] / a trifocal lens [n -S]