19-letter words containing d, e, x
- oxidation-reduction — a chemical reaction between two substances in which one substance is oxidized and the other reduced.
- parathyroid extract — an aqueous preparation obtained from the parathyroid gland of cattle, used in medicine chiefly in cases of parathyroid deficiency and in veterinary medicine in the treatment of tetanic convulsions.
- peroxysulfuric acid — persulfuric acid (def 1).
- potassium hydroxide — a white, deliquescent, water-soluble solid, KOH, usually in the form of lumps, sticks, or pellets, that upon solution in water generates heat: used chiefly in the manufacture of soap, as a laboratory reagent, and as a caustic.
- pseudo-experimental — pertaining to, derived from, or founded on experiment: an experimental science.
- revenue expenditure — the amount of money spent by a business or organisation on general operating costs such as rent, insurance, heating, maintenance etc
- sexual reproduction — reproduction involving the union of gametes.
- sixteenth amendment — an amendment to the U.S. Constitution, ratified in 1913, authorizing Congress to levy a tax on incomes.
- strontium hydroxide — a white, slightly water-soluble powder, Sr(OH) 2 , or its crystalline octahydrate (strontium hydrate) used chiefly in the refining of beet sugar.
- xenon tetrafluoride — a colorless, crystalline compound, XeF 4 , prepared by heating a gaseous mixture of fluorine and xenon.