Cesiums is a 7 letter English word. It's valid Scrabble word worth 10 points. It's valid Words with friends word worth 13 points.
You can make 136 anagrams from letters in cesiums (ceimssu).
1930-35; New Latin, special use of Latin caesium, neuter of caesius bluish-grey; see -ium
Even at the Chernobyl meltdown in 1986, he pointed out, cesium and iodine were the problem.