WordReference Random House Unabridged Dictionary of American English © 2026
me•ter-kil•o•gram-sec•ond
(mē′tər kil′ə gram′sek′ənd),USA pronunciation adj.
- Physicsof or pertaining to the system of units in which the meter, kilogram, and second are the principal units of length, mass, and time. Abbr.: mks, MKS
- 1935–40