verb (used with object), flu·id·ized, flu·id·iz·ing.
- to make (something) fluid.
- Chemistry. to suspend or transport (finely divided particles) in a stream of gas or air.
verb (used without object), flu·id·ized, flu·id·iz·ing.
- to become fluid.
- (tr) to make fluid, esp to make (solids) fluid by pulverizing them so that they can be transported in a stream of gas as if they were liquidsfluidized coal