acid, acidity, agent, alkalinity, alloisomer, anion, antacid, atom, base, biochemical, cation, chemical, chemical element, chromoisomer, compound, copolymer, dimer, element, heavy chemicals, high polymer, homopolymer, hydracid, inorganic chemical, ion, isomer, macromolecule, metamer, molecule, monomer, neutralizer, nonacid, organic chemical, oxyacid, polymer, pseudoisomer, radical, reagent, sulfacid, trimer
calefaction, increase of temperature, heating, calefaction, tepefaction, torrefaction, melting, fusion, liquefaction, burning, ambustion, combustion, incension, accension, concremation, cremation, scorification, cautery, cauterization, ustulation, calcination, cracking, refining, incineration, cineration, carbonization, cupellation, ignition, inflammation, adustion, flagration, deflagration, conflagration, empyrosis, incendiarism, arson, auto dafe, boiling, coction, ebullition, estuation, elixation, decoction, ebullioscope, geyser, distillation (vaporization), furnace, blanket, flannel, fur, wadding, clothing, still, refinery, fractionating column, fractionating tower, cracking tower, match, incendiary, petroleuse, cauterizer, caustic, lunar caustic, alkali
, apozem, moxa, acid, aqua fortis, aqua regia, catheretic, nitric acid, nitrochloro-hydric acid, nitromuriatic acid, radioactivity, gamma rays, alpha particles, beta rays, X-rays, radiation, cosmic radiation, background radiation, radioactive isotopes, tritium, uranium, plutonium, radon, radium, sunstroke, coup de soleil, insolation, pottery, ceramics, crockery, porcelain, china, earthenware, stoneware, pot, mug, terra cotta, brick, clinker, cinder, ash, scoriae, embers, soot, slag, coke, carbon, charcoal, wood alcohol, turpentine, tea tree oil, gasoline, kerosene, naptha, fuel oil (fuel), wax, paraffin, residue, tar, inflammability, combustibility, diathermancy, transcalency, conduction, convection, radiation, radiant heat, heat conductivity, conductivity, thermal expansion, coefficient of expansion, heated, molten, sodden, r_echauff_e, heating, adust, inflammable, combustible, diathermal, diathermanous, burnt, volcanic, radioactive.
bitterness, acridness, acridity, acrimony, caustic, alkali
, acerbity, gall, wormwood, bitters, astringent bitters, Angostura, aromatic bitters, sourness, pungency, alkaloids, turmeric, bitter, bitterish, acrid, acerb, acerbic, bitter as gall, bitter pill to take, sugar coating on a bitter pill.