In Jain Dharma, “Mahavir” is not a full form made from separate alphabets.

It is a word/title:

• Maha = great
• Veer / Vir = brave, heroic

So Mahavir means “the great courageous one” or “the great hero.”

It is the name and title of Bhagwan Mahavir, the 24th Tirthankar of Jainism.