[ ŏm′nə-fō′kəl ]
A lens that corrects for near and distant vision whose section for near vision is a continuously variable curve.
Retro Words You’ll Probably Never Use AgainMost of these retronyms -- obsolete words and phrases -- are outdated technologies.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.