18-letter words containing b, i, o, p, r
- oblique projection — something that is oblique.
- octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
- one's number is up — one is finished; one is ruined or about to die
- optical brightener — an additive that dyes and brightens fabric or paper
- passive vocabulary — all the words, collectively, that a person can understand
- petite bourgeoisie — the portion of the bourgeoisie having the least wealth and lowest social status; the lower middle class.
- pileolated warbler — either of two western subspecies of Wilson's warbler.
- piperonyl butoxide — a light-brown liquid, C 1 9 H 3 0 O 5 , used chiefly as a synergist in certain insecticides.
- point-bearing pile — a pile depending on the soil or rock beneath its foot for support.
- portable equipment — Portable equipment is electrical equipment that can easily be moved from one place to another while in operation or while connected to the supply.
- prairie wake-robin — a woodland trillium, Trillium recurvatum, of the central U.S., having purple-mottled leaves and brown-purple flowers.
- prepositional verb — a combination of verb and preposition, often with idiomatic meaning, differing from other phrasal verbs in that an object must always follow the preposition, as take after in The children take after their mother.
- price on sb's head — If there is a price on someone 's head, an amount of money has been offered for the capture or killing of that person.
- probability theory — the theory of analyzing and making statements concerning the probability of the occurrence of uncertain events. Compare probability (def 4).
- productivity bonus — an extra payment made to workers for being more productive or yielding more favourable results than normal
- protease inhibitor — a drug that inhibits the action of protease, especially any of a class of antiviral drugs that prevent the cleavage and replication of HIV proteins.
- provably difficult — The set or property of problems for which it can be proven that no polynomial-time algorithm exists, only exponential-time algorithms.
- pseudotuberculosis — an acute, sometimes fatal disease of rodents, birds, and other animals, including humans, caused by the bacterium Yersinia (Pasteurella) pseudotuberculosis, and characterized by the formation of nodules resembling those that result from tuberculosis.
- public corporation — a corporation, owned and operated by a government, established for the administration of certain public programs.
- pulmonary embolism — the blockage of a pulmonary artery, often by a blood clot, that stops the flow of blood to the lungs and which can result in death if untreated
- rabbit-proof fence — a fence through which rabbits are unable to pass
- ribbon development — housing or commercial buildings built along a stretch of road.
- september holidays — a period of time in September when people do not have to go to school, college or work
- solubility product — the maximum number of undissociated ions, of an electrolyte in a saturated solution, capable at a given temperature of remaining in equilibrium with the undissolved phase of the solution.
- subatomic particle — physics:
- subsidiary company — a company whose controlling interest is owned by another company.
- supraorbital ridge — browridge.
- tip of the iceberg — a large floating mass of ice, detached from a glacier and carried out to sea.
- transporter bridge — a bridge for carrying passengers and vehicles by means of a platform suspended from a trolley.