noun
: a solid catalyst in a finely divided state that is kept in constant motion in a stream of gas (as in the cracking of petroleum) : a fluidized catalyst
noun
: a solid catalyst in a finely divided state that is kept in constant motion in a stream of gas (as in the cracking of petroleum) : a fluidized catalyst
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012