[trahy-bol-uh-jee, tri-]
the study of the effects of friction on moving machine parts and of methods, as lubrication, of obviating them.

1965–70; tribo- + -logy

tribologist, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
tribology (traɪˈbɒlədʒɪ)
the study of friction, lubrication, and wear between moving surfaces

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1965, "study of friction," from Gk. tribos "rubbing," from tribein "to rub" (from PIE base *ter- "to rub, turn, twist;" see throw) + -logy.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Advanced engine testing and tribology research aren't part of typical summer internships.
He conducts fundamental and applied research in tribology, surface science and engineering, lubrication and coatings.
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