perisaturniumEtymologyFrom peri- + Saturn + -ium, Latin form of -ion.perisaturnium means Synonym of perikrone. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounSynonym of perikrone.“It is difficult by means of the old observations to separate the annual motion of the perisaturnium very accurately from any small error that may still exist in the mean motion of the satellite, but on the whole it appears that the elements are now determined with a good degree of approximation.”