English
mascon
Blend of mass + concentration in 1960s by scientists Paul Muller and William Sjogren.
A blend of mass + concentration
Ancient Greek μᾶζα ‘barley-cake, lump of dough’
Latin massa ‘lump, dough’
Anglo-Norman masse
Middle English masse ‘lump, quantity of matter’
English mass
New Latin concentrātiō ‘(1550) action or an act of coming together at…’
English concentration
Today it means
noun A region within a solid astronomical body that is of higher density than the surrounding material.
Language periods are conventional ranges, not dates for this word.
Etymograph / mascon