Yours, Etc.: Origins and Uses of 8 Sign-Offs
"partial paralysis," 1690s, Modern Latin, from Greek paresis "letting go, slackening of strength, paralysis," from stem of parienai "to let go," from para- (see para- (1)) + hienai "to send, throw" (see jet (v.)).
paresis pa·re·sis (pə-rē'sĭs, pār'ĭ-sĭs)n. pa·re·ses (-sēz)
Slight or partial paralysis.