25-letter words containing r, h
- non-algorithmic procedure — heuristic
- northern corn-leaf blight — northern leaf blight.
- not for the faint-hearted — If you say that something is not for the faint-hearted, you mean that it is an extreme or very unusual example of its kind, and is not suitable for people who like only safe and familiar things.
- nuffield teaching project — (in Britain) a complete school programme in mathematics, science, languages, etc, with suggested complementary theory and practical work
- off-balance sheet reserve — a sum of money or an asset that should appear on a company's balance but does not; hidden reserve
- on the horns of a dilemma — one of the bony, permanent, hollow paired growths, often curved and pointed, that project from the upper part of the head of certain ungulate mammals, as cattle, sheep, goats, or antelopes.
- on the spur of the moment — a U -shaped device that slips over and straps to the heel of a boot and has a blunt, pointed, or roweled projection at the back for use by a mounted rider to urge a horse forward.
- on the tip of your tongue — If a comment or question is on the tip of your tongue, you really want to say it or ask it, but you decide not to say it.
- on the understanding that — with the condition that; providing
- organizational psychology — the study of the structure of an organization and of the ways in which the people in it interact, usually undertaken in order to improve the organization
- orpheus in the underworld — a classical operetta; the French name is Orphée aux enfers
- over-the-counter medicine — An over-the-counter medicine is a medicine that may be sold without a doctor's prescription.
- oxidative phosphorylation — the aerobic synthesis, coupled to electron transport, of ATP from phosphate and ADP.
- palo alto research center — XEROX PARC
- palo alto research centre — XEROX PARC
- peripheral nervous system — the portion of the nervous system lying outside the brain and spinal cord.
- petropavlovsk-kamchatskiy — seaport in E Asian Russia, on Kamchatka Peninsula: pop. 210,000
- pharmacotherapeutic group — Drugs and agents are categorized into pharmacotherapeutic groups based on which diseases they are designed to treat.
- phase contrast microscope — a microscope that utilizes the phase differences of light rays transmitted by different portions of an object to create an image in which the details of the object are distinct despite their near-uniformity of refractive index.
- phase-contrast microscope — a microscope that utilizes the phase differences of light rays transmitted by different portions of an object to create an image in which the details of the object are distinct despite their near-uniformity of refractive index.
- poacher turned gamekeeper — someone whose occupation or behaviour is the opposite of what it previously was, such as a burglar who now advises on home security
- polymerase chain reaction — a technique in which a known DNA sequence is synthesized at high temperatures by means of a polymerase, producing millions of copies for statistical analysis: used in DNA fingerprinting, in detecting minute quantities of cancer cells, etc.
- polynomial-time algorithm — (complexity) A known algorithm (or Turing Machine) that is guaranteed to terminate within a number of steps which is a polynomial function of the size of the problem. See also computational complexity, exponential time, nondeterministic polynomial-time (NP), NP-complete.
- portable network graphics — (file format) /ping/ (PNG) An extensible file format for the lossless, portable, well-compressed storage of raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-colour, greyscale and truecolour images are supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits. PNG is designed for on-line viewing applications, such as the World Wide Web, so it is fully streamable with a progressive display option. PNG is robust, providing both full file integrity checking and simple detection of common transmission errors. Also, PNG can store gamma correction and chromaticity data for improved colour matching on heterogeneous platforms.
- preferred ordinary shares — shares issued by a company that rank between preference shares and ordinary shares in the payment of dividends
- psychiatric social worker — (in Britain) a qualified person who works with mentally-ill people and their families, based in a psychiatric hospital, child guidance clinic, or social services department area team, and who may also be an approved social worker
- put sth out of its misery — If you put an animal out of its misery, you kill it because it is sick or injured and cannot be cured or healed.
- raise (or lower) the bar — raise (or lower) the standard of judgment
- ram down someone's throat — the passage from the mouth to the stomach or to the lungs, including the pharynx, esophagus, larynx, and trachea.
- ram's-head lady's-slipper — a rare, slender-stemmed orchid, Cypripedium arietinum, of northeastern North America, that has crimson-streaked, whitish-lipped flowers with purple sepals and grows in moist soil.
- rate monotonic scheduling — (algorithm) A means of scheduling the time allocated to periodic hard-deadline real-time users of a resource. The users are assigned priorities such that a shorter fixed period between deadlines is associated with a higher priority. Rate monotonic scheduling provides a low-overhead, reasonably resource-efficient means of guaranteeing that all users will meet their deadlines provided that certain analytical equations are satisfied during the system design. It avoids the design complexity of time-line scheduling and the overhead of dynamic approaches such as earliest-deadline scheduling.
- read someone the riot act — If someone in authority reads you the riot act, they tell you that you will be punished unless you start behaving properly.
- rehabilitation department — a government department set up after World War II to assist ex-servicemen
- ruby-throated hummingbird — a small hummingbird, Archilochus colubris, the only hummingbird of eastern North America, having metallic-green upper plumage and a bright red throat in the male.
- ruffle someone's feathers — one of the horny structures forming the principal covering of birds, consisting typically of a hard, tubular portion attached to the body and tapering into a thinner, stemlike portion bearing a series of slender, barbed processes that interlock to form a flat structure on each side.
- saint joseph of arimathea — a wealthy member of the Sanhedrin, who obtained the body of Jesus after the Crucifixion and laid it in his own tomb (Matthew 27:57–60). Feast day: Mar 17 or July 31
- selective synchronization — a sound-recording process that facilitates overdubs by feeding the recorded track to the performer straight from the recording head
- sequential parlog machine — (SPM) The virtual machine (and its machine code) for the Parlog logic programming language.
- slip/fall through the net — You use slip through the net or fall through the net to describe a situation where people are not properly cared for by the system that is intended to help them.
- software through pictures — (programming, tool) (StP) A set of CASE tools distributed by Aonix.
- stand in a person's light — to stand so as to obscure a person's vision
- stretch one's imagination — If you say that something stretches your imagination, you mean that it is good because it makes you think about things that you had not thought about before.
- sulphate-resisting cement — a type of Portland cement that resists normal concentrations of sulphates: used in concrete for flues and underwater work
- sympathetic introspection — a study of human conduct in which the investigator imagines himself or herself engaged in that conduct.
- take sth under advisement — If someone in authority takes a matter under advisement, they decide that the matter needs to be considered more carefully, often by experts.
- take up the cudgels (for) — to come to the defense (of)
- tess of the d'urbervilles — a novel (1891) by Thomas Hardy.
- tetragonal trisoctahedron — Geometry. a trisoctahedron the faces of which are quadrilaterals; trapezohedron.
- thank one's (lucky) stars — to be thankful for what appears to be good luck
- the ball is in sb's court — If you say that the ball is in someone's court, you mean that it is his or her responsibility to take the next action or decision in a situation.