19-letter words containing x, r, a
- oxidation-reduction — a chemical reaction between two substances in which one substance is oxidized and the other reduced.
- oxyacetylene burner — a blowpipe for cutting or welding metals at high temperatures
- 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.
- performance anxiety — the stage fright that a person feels when they are about to perform (a play, piece of music etc) in front of an audience
- peroxysulfuric acid — persulfuric acid (def 1).
- pointe-aux-trembles — a city in S Quebec, in E Canada, N of Montreal, on the St. Lawrence.
- polycarboxylic acid — a type of carboxylic acid containing two or more carboxyl groups
- 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.
- reciprocal exchange — an unincorporated association formed so that its members can participate in reciprocal insurance.
- reflux oesophagitis — inflammation of the gullet caused by regurgitation of stomach acids, producing heartburn: may be associated with a hiatus hernia
- relocation expenses — Relocation expenses are a sum of money that a company pays to someone who moves to a new area in order to work for the company. The money is to help them pay for moving house.
- sexual inter-course — genital contact, especially the insertion of the penis into the vagina followed by orgasm; coitus; copulation.
- sexual reproduction — reproduction involving the union of gametes.
- sexual stereotyping — the formation or promotion of a fixed general idea or image of how men and women will behave
- symptomatic anthrax — blackleg.
- synchromesh gearbox — A synchromesh gearbox is a usually manually operated transmission in which a change of gears takes place between gears that are already revolving at the same speed.
- translation of axes — the process of replacing the axes in a Cartesian coordinate system with a new set of axes, parallel to the first, used to write equations of curves not centered about the origin.
- transparent context — an expression in which any term may be replaced by another with the same reference without changing its truth-value
- travelling expenses — expenses that are paid to someone, for example, by their employer, for the costs they need to travel
- vesicular exanthema — an infectious viral disease of swine, characterized by blisters on the snout, mucous membranes, and feet.
- xenon tetrafluoride — a colorless, crystalline compound, XeF 4 , prepared by heating a gaseous mixture of fluorine and xenon.
- xenotransplantation — xenograft.
- xt bus architecture — (hardware, architecture) (After the IBM PC XT) An eight-bit ISA bus architecture used by Intel 8086 and Intel 8088 systems in the IBM PC and IBM PC XT in the 1980s. It predates the 16-bit ISA architecture used on the Intel 80286 based machines. The XT bus has four DMA channels, of which three are brought out to the expansion slots. Of these three, two are normally allocated to machine functions: DMA channel Expansion Standard function 0 No {dynamic RAM} refresh 1 Yes add-on cards 2 Yes {floppy disk} controller 3 Yes {hard disc} controller (1997-09-15)