Chiari surgery A posterior fossa decompression is a surgical procedure performed to remove the bone at the back of the skull and spine. The dura overlying the tonsils is opened and a patch is sewn to expand the space, similar to letting out the waistband on a pair of pants.
Undercapitalization - Undercapitalization refers to any scenario or context where companies are in a dire position of not being able to get the funding or monies they require.
Derealization or derealisation (sometimes abbreviated as DR) is an alteration in the perception or experience of the external world so that it seems unreal. Other symptoms include feeling as though one's environment is lacking in spontaneity, emotional colouring and depth.