13-Letter Words Containing: FO

• express as a formula

• the act of making formal (as by stating formal rules governing classes of expressions)

• the confinement of an infection to a limited area

• the act of bringing into focus

• a colorless poisonous gas; made by the oxidation of methanol

• in physical discomfort

• knowledge of an event before it occurs

• the process of fossilizing a plant or animal that existed in some earlier age; the process of being turned to stone

• becoming inflexible or out of date