1. (a.) Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry; as, chemical changes; chemical combinations.

2. (n.) A substance used for producing a chemical effect; a reagent.

Chile saltpeter absolute alcohol acetate acetone acid acidity agent alcohol aldehyde alkali alkalinity alloisomer amine ammonia amyl alcohol anhydride anion antacid arsenate arsenite atom base basic basic anhydride benzoate bicarbonate bicarbonate of soda bichloride of mercury biochemical bisulfate borate borax bromide calcium carbonate calcium hydroxide carbide carbohydrate carbon dioxide carbon monoxide carbonate cation chemical element chemicals chemicobiological chemicoengineering chemicomineralogical chemicophysical chemurgic chlorate chlorite chromate chromoisomer citrate compound copolymer copolymeric copolymerous copperas cyanide dehydrated alcohol dichromate dimer dimeric dimerous dioxide disulfide electrochemical element elemental elementary ester ethanol ether ethyl ethyl alcohol fluoride formaldehyde fulminate halide halogen heavy chemicals heteromerous high polymer homopolymer hydracid hydrate hydride hydrocarbon hydroxide hypochlorite inorganic chemical inorganic chemistry iodide ion isomer isomerous isopropyl alcohol ketone lactate macrochemical macromolecule metamer metameric methane methanol methyl methyl alcohol molecule monomer monomerous monoxide neutralizer niter nitrate nitride nitrite nonacid organic chemical oxalate oxide oxyacid permanganate peroxide petrochemical phosphate phosphide photochemical physicochemical phytochemical polymer polymeric potash potassium nitrate pseudoisomer radical radiochemical reagent sal ammoniac salt saltpeter silicate sodium bicarbonate sodium bromide sodium chloride sodium hypochlorite sulfacid sulfate sulfide sulfite tartrate thermochemical trimer