It actually means this. Very great or intense.
Neurorrhaphy is surgical suture of the ends of a severed nerve.
Corpus callosotomy is the medical term meaning surgical severing of the corpus callosum.
One synonym would be "severed" depending on the meaning.
severed means cut off
a leg that has been cut, or 'severed', in half
A Severed Head was created in 1961.
A Severed Wasp was created in 1982.
The Severed Arm was created in 1973.
The Severed Man was created in 2004.
Severed Fifth was created in 2008.
A Severed Head has 251 pages.
A Severed Wasp has 388 pages.