/ Dictionary / Index L lg. tn.: Meaning and Definition of Find definitions for: lg. tn. Pronunciation: [key] long ton. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lgth. LH Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language