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
Severed Fifth was created in 2008.
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.
The duration of Severed Ways is 1.78 hours.
Severed Survival was created in 1989-01.