ipsilateral
UK[ˌɪp.sɪˈlæt.ər.əl]US[ˌɪp.səˈlæt̬.ɚ.əl]
adj
Located on or affecting the same side of the body.
Morpheme Breakdown
ipsi
lateral
ipsi
same
lateral
side
Etymology
The term 'ipsilateral' is a modern scientific compound, constructed directly from Latin elements to achieve precise anatomical description. The prefix 'ipsi-', derived from the Latin pronoun ipse (self, same), was adopted into scientific vocabulary to denote sameness. It combines with 'lateral', from Latin lateralis (of the side), itself from latus (side). Thus, the word's literal construction, "same side," maps perfectly onto its modern medical meaning, denoting structures or processes occurring on the same side of the body, in contrast to its counterpart 'contralateral'.
Analysis
Structure: ipsi (same) + lateral (side)
- ipsi: From Latin ipse meaning "self, same." In this compound, it functions as a prefix meaning "the same."
- lateral: From Latin lateralis, from latus meaning "side." It functions as the base root meaning "pertaining to the side."
Examples
The patient experienced pain in the ipsilateral arm following the shoulder injury.
The neural signal travels to the ipsilateral hemisphere of the brain.
An ipsilateral reflex involves a response on the same side of the body as the stimulus.