Wiktionary
n. (context medicine English) muscular weakness that affects only one side of the body
Wikipedia
Hemiparesis is unilateral paresis, that is, weakness of the entire left or right side of the body (hemi- means "half"). Hemiplegia is, in its most severe form, complete paralysis of half of the body. Hemiparesis and hemiplegia can be caused by different medical conditions, including congenital causes, trauma, tumors, or stroke.
Usage examples of "hemiparesis".
He said that I was quite unusual in that while I had undergone major sense deprivation in those first weeks following my cerebrovascular accident and while there was obvious left hemiparesis, there was no sign of paroxia or loss of visual perception.
You have what we think is a transient hemiplegia or hemiparesis, and we expect full resolution of that.