ˈmasˌkän noun
( -s )
Etymology: mass (II) + con centration
: any of the high-density regions below the surface of lunar maria that are held to perturb the motion of spacecraft in lunar orbit
ˈmasˌkän noun
( -s )
Etymology: mass (II) + con centration
: any of the high-density regions below the surface of lunar maria that are held to perturb the motion of spacecraft in lunar orbit
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012