What is the significance of the name "MahaDeva"?

maha dev......... the supreme god....

this title was given to lord shiv[a] because he is the creator and destroyer of all elements and every single thing in this universe is created by him.....

in greek mythology ,

zeus is the supreme god..... he is the most superior of all gods!

well by the way .... no offense but.... dev is a sanskrit word and as study sanskrit literature i can tell u that the words such as ram , laxman , ganesh etc are written as rama , laxmana and ganesha .... and dude this is totally wrong.... ganesha is the way the foreigners pronounce and thats y ... somewhat the english spelling is such.... but itz kinda wrong....

Mahadeva: (Sanskrit) "Great shining one; God."

A monk who put forward five theses which were debated at the conjectured Third Council (see Council of Pāṭaliputra I). The five points as formulated by later commentators were as follows: (1) Arhats can still be led astray by others; (2) Arhats are still subject to ignorance—not ‘defiled ignorance’ (avidyā) but of the lesser kind known as ‘undefiled ignorance’ (akliṣṭa ajñāna); (3) Arhats are still subject to doubt (kāṇkṣā) and (4) can be instructed and informed by others; (5) entry into the Noble Path (ārya-mārga) by an Arhat can be accompanied by a vocal utterance (vacībheda), an artifice meant to generate the appearance of the Path.

Maha - greatest

deva - God

Lord shiva is called Mahadeva, because he is supreme in all forms of God

Maha = Great

Deva= Divinity

Great God or Biggest in Gods.(Maha means Great or Big,and Deva means God.) It's used for lord Shiva.

Mahadev = Mahan + Dev

= The great Deity/God

= The Deity/God, who is greater than others.

Aum Namah Shivay

Supreme power

He who possess qualities of all forms of God is called Mahadev.

Great God

great god