/ Thesaurus / F Synonyms of focal length Find synonyms for: Noun1. focal distance, focal length, distanceusage: the distance from a lens to its focusWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language