The two crossword solutions for the term 'cleaning fluid' are ACETONE (7 letters) and SOLVENT (7 letters). ACETONE is a colorless, volatile, flammable liquid that is used as a SOLVENT in many industries, including paint and varnish removers, nail polish remover, and adhesives. SOLVENT is a substance capable of dissolving another substance, such as a liquid or gas, to form a solution. Solvents are used in many cleaning products, such as detergents, degreasers, and window cleaners.