/ Dictionary / Index T therblig: Meaning and Definition of Find definitions for: ther•blig Pronunciation: (thûr'blig), [key] — n. (in time and motion study) any of the basic elements involved in completing a given manual operation or task that can be subjected to analysis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Theravadin there Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language