Can't find any compound Sanskrit words containing mahattvam.
Meaning of the Sanskrit Word: mahattvam
mahattvam—greatness SB 1.16.26, SB 1.16.27, SB 1.16.28, SB 1.16.29, SB 1.16.30, SB 1.16.26-30, SB 4.12.47, SB 5.18.13, SB 9.5.14, Adi 16.41