The Study of Friction and Lubrication
This page is the CodyCross answer for the clue below from Hobbies, Group 1407, Puzzle 5 (Toy Voyaging).
Question is: The Study of Friction and Lubrication
and the answer is: TRIBOLOGY
Word Meaning:
TRIBOLOGY — (physics, engineering) The science and engineering of interacting surfaces in relative motion; the study and application of technology using the principles of friction, lubrication and wear.
Definitions from Wiktionary.