proctoclysis

noun
proc·​toc·​ly·​sis | \ präk-ˈtäk-lə-səs How to pronounce proctoclysis (audio) \
plural proctoclyses\ -​ˌsēz How to pronounce proctoclyses (audio) \

Medical Definition of proctoclysis

: slow injection of large quantities of a fluid (as a solution of salt) into the rectum in supplementing the liquid intake of the body