Akinetic: Without movement (or without much movement). A term used in neurology to denote the absence (or poverty) of movement. The word 'akinetic' comes from the prefix 'a-' meaning 'without' + the Greek word 'kinesis' meaning motion = without motion. For example, a person in coma is akinetic. For another example, akinetic mutism is a condition in... Found on http://www.medterms.com/script/main/art.asp?articlekey=6989