mahatma—the virata purusa SB 2.1.37
mahatma—the great one. Bg 11.50
mahatma—the Lord in the form of the great sage Parasurama SB 2.7.22
mahatma—the great soul SB 8.15.3
mahatma—expanded intelligence SB 3.14.48
mahatma—the Supersoul. SB 6.9.26, SB 6.9.27, SB 6.9.26-27
Can't find any compound Sanskrit words containing mahatma.