महाज्ञानी mahāgyānī

महाज्ञानी mahāgyānī (sanskrit)

Great sage, great man of science, great scholar.

ज्ञानी gyānī (sanskrit)

Who has Gyān, wise, learned, knowledgeable, well-informed, one who has attained self-realisation.

महान्, महा mahān, mahā (sanskrit)

(prefix) Great, illustrious.
Mighty, strong, big, large, ample, excessive, grievous.
Very, extremely, very much.