[ thur-blig ]
/ ˈθɜr blɪg /
(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.
Origin of therblig
1930–35, Americanism; anagram of F. B. Gilbreth (1868–1924), American engineer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019