[1] : WordNet (r) 2.0

centre of gravity
     n : the point within something at which gravity can be
         considered to act; in uniform gravity it is equal to the
         center of mass syn: center of gravity
see also:
center of gravity 

Centre >> C Words
Centre, definition of term: Centre
centre_pag1.html

Gravity >> G Words
Gravity, definition of term: Gravity
gravity_pag1.html

Gravity Wave >> G Words
Gravity Wave, definition of term: Gravity Wave
gravity+wave_pag1.html