19-letter words containing m, e, r, a
- phenylthiocarbamide — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
- photographic memory — total recall
- photopolymerization — polymerization induced by light.
- physical impairment — A physical impairment is a condition in which a part of a person's body is damaged or is not working properly.
- physically impaired — with reduced or weakened physical capacity
- pilgrimage of grace — a rebellion in 1536 in N England against the Reformation and Henry VIII's government
- pistachio ice cream — ice cream flavoured with pistachios
- planning permission — In Britain, planning permission is official permission that you must get from the local authority before building something new or adding something to an existing building.
- plastic deformation — In plastic deformation a material changes shape when a stress is applied to it and does not go back to its original state when the stress is removed.
- pneumoencephalogram — an encephalogram made after the replacement of the cerebrospinal fluid by air or gas, rarely used since the development of the CAT scanner.
- pneumogastric nerve — the vagus nerve.
- pointe-aux-trembles — a city in S Quebec, in E Canada, N of Montreal, on the St. Lawrence.
- potassium carbonate — a white, granular, water-soluble powder, K 2 CO 3 , used chiefly in the manufacture of soap, glass, and potassium salts.
- 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.
- preliminary hearing — initial court session
- presumption of fact — a presumption based on experience or knowledge of the relationship between a known fact and a fact inferred from it.
- primary containment — Primary containment is the main means of preventing leaks and spills using equipment in direct content with the oil or gas being stored or transported.
- prime interest rate — prime rate.
- prismatic telescope — a telescope having an eyepiece at the side or top equipped with a reflecting prism, used for taking sights at steep angles.
- process performance — Process performance is a measure of how efficient or effective a process is.
- programmed learning — a progressively monitored, step-by-step teaching method, employing small units of information or learning material and frequent testing, whereby the student must complete or pass one stage before moving on to the next.
- programmer's switch — (hardware) A button on the front of some Apple Macintosh computers which, when pressed, causes a command line prompt to appear. This gives access to the built-in mini-debugger, which has commands to dump memory, return to the application that was broken out, and others. A more sophisticated debugger must be installed in order to inspect breakpoints, etc.
- progressive judaism — Reform Judaism.
- pseudo-experimental — pertaining to, derived from, or founded on experiment: an experimental science.
- pseudohermaphrodite — an individual having internal reproductive organs of one sex and external sexual characteristics resembling those of the other sex or being ambiguous in nature. Compare hermaphrodite (def 1).
- pseudorandom number — (programming) One of a sequence of numbers generated by some algorithm so as to have an even distribution over some range of values and minimal correlation between successive values. Pseudorandom numbers are used in simulation and encryption. They are pseudorandom not random because the sequence eventually repeats exactly and is entirely determined by the initial conditions. One of the simplest algorithms is x[i+1] = (a * x[i] + c) mod m but this repeats after at most m numbers and successive numbers are closely related. Better algorithms generally use more previous numbers to calculate the next number.
- psychrometric chart — a chart for calculating values of relative humidity, absolute humidity, and dew point from psychrometer readings.
- pythagoras' theorem — (spelling) It's Pythagoras's Theorem.
- pythagorean theorem — Pythagoras's Theorem
- quantum electronics — the application of quantum mechanics and quantum optics to the study and design of electronic devices
- quartermaster corps — the branch of the U.S. Army responsible for supplying food, clothing, fuel, and equipment and for the operation of commissaries, laundries, etc.
- queen street farmer — a businessman who runs a farm, often for a tax loss
- radiopharmaceutical — any of a number of radioactive drugs used diagnostically or therapeutically.
- ralph waldo emerson — Ralph Waldo [wawl-doh,, wol-] /ˈwɔl doʊ,, ˈwɒl-/ (Show IPA), 1803–82, U.S. essayist and poet.
- reactor temperature — The reactor temperature is the temperature at various stages in a reactor in an FCC unit.
- rec room (or hall) — recreation room (or hall)
- recessional moraine — a moraine marking a temporary halt in the general retreat of a glacier.
- register assignment — (compiler, algorithm) The phase of a compiler that determines which register to use for each program value selected during register allocation.
- registration number — number on vehicle licence plate
- relative complement — the set of elements contained in a given set that are not elements of another specified set.
- relative impediment — a fact or circumstance that disqualifies from lawful marriage persons who are closely related.
- releasing mechanism — a hypothetical control complex in the central nervous system of animals that triggers the appropriate behavioral response to a releaser.
- removable cartridge — a hard disk enclosed in a case that can be removed from the disk drive, having more storage than floppy disks.
- removable hard disk — (storage) A type of magnetic disk, or possibly magneto-optical disk which is not permanently attached to the disk drive (not a fixed disk) but which can be taken out and replaced, allowing many disks to be used in the same drive. The term "removable disk" would seem to be applicable to floppy disks but is generally reserved for hard disks in suitable cartridges such as those made by Syquest, Iomega and others. Removable disk packs were common on minicomputers such as the PDP-11 in use in the 1970s except that the drives were the size of washing machines and the disk packs as big as car wheels. Removable disks became popular on microcomputers in the 1990s as a cheap way of expanding disk space, transporting large amounts of data between computers and storing backups. Large, cheap fixed hard disks and USB memory sticks have made removable disks less attractive.
- representationalism — Also called representative realism. Epistemology. the view that the objects of perception are ideas or sense data that represent external objects, especially the Lockean doctrine that the perceived idea represents exactly the primary qualities of the external object.
- republic of vietnam — the name (from 1955–75) for South Vietnam, as an independent republic, following the division of the country in 1954 into North Vietnam and South Vietnam
- republique malgache — French name of Malagasy Republic.
- resistance movement — a movement fighting (for freedom, etc), often secretly or illegally, against an invader in an occupied country or against the country's government, etc
- respiratory pigment — any of several colored protein substances, as hemoglobin and hemocyanin, in the circulatory system of animals and some plants, that combine reversibly with oxygen that is carried to the tissues
- reticular formation — a network of neurons in the brainstem involved in consciousness, regulation of breathing, the transmission of sensory stimuli to higher brain centers, and the constantly shifting muscular activity that supports the body against gravity.