neuropraxia

Etymology
Mistaken reanalysis of ( + ) as if it were  + *praxia; this is etymologically nonsensical because the  in  represents the negating prefix (in the New Latin original) to mean the opposite of what the unrealized form *praxia would mean.

Usage notes
Because of the inconsistent etymology, at least one major dictionary marks as a misspelling rather than a variant. However, the form is very widely used, and at least one other major dictionary enters this form as a variant without any usage label.