21-letter words containing a, l, p, h, r, t
- maidenhair spleenwort — an evergreen fern, Asplenium trichomanes, abundant in woody areas of the North Temperate Zone, having thickly clustered fronds.
- main-topsail schooner — a two-masted or three-masted schooner having square topsails on the foremast and mainmast: a jackass brig or jackass bark.
- megaspore mother cell — a diploid cell in plants that undergoes meiosis to create four haploid megaspores.
- mother-of-pearl cloud — nacreous cloud.
- mother-of-pearl glass — an American art glassware having colored glass set into indentations in a thickness of opaque glass, the whole covered with clear glass and etched slightly with acid.
- no less a person than — a person of no lower importance, rank, etc. than
- nothing in particular — not anything specific
- old spanish practices — irregular practices among a group of workers to gain increased financial allowances, reduced working hours, etc
- ophthalmia neonatorum — inflammation of the eyes of a newborn child due to an infectious disease, as gonorrhea, contracted during birth from the infected mother.
- orthogonal projection — a two-dimensional graphic representation of an object in which the projecting lines are at right angles to the plane of the projection. Also called orthogonal projection. Compare isometric (def 5).
- pellitory-of-the-wall — an urticaceous plant, P. diffusa, of the S and W European genus Parietaria, which grows in crevices and has long narrow leaves and small pink flowers
- phrase-structure rule — a rule that generates a sentence or other syntactic construction from words and phrases and identifies its constituent structure.
- physical anthropology — the branch of anthropology dealing with the evolutionary changes in human anatomy and physiology, using mensurational and descriptive techniques.
- pipelined burst cache — Pipeline Burst Cache
- polygenic inheritance — the heredity of complex characters that are determined by a large number of genes, each one usually having a relatively small effect.
- populist shop steward — a shop steward who operates in a delegate role, putting the immediate interests of his members before union principles and policies
- programmed cell death — a normal, genetically regulated process leading to the death of cells and triggered by the presence or absence of certain stimuli, as DNA damage.
- propantheline bromide — a substance, C 2 3 H 3 0 BrNO 3 , used in the treatment of peptic ulcers.
- public health service — the agency that is responsible for the health of the general public
- pulse height analyser — a multichannel analyser that sorts pulses into selected amplitude ranges
- pulse height analyzer — an instrument that records or counts an electrical pulse if its amplitude falls within specified limits: used in nuclear physics research for the determination of energy spectra of nuclear radiations
- put sb in their place — If you put someone in their place, you show them that they are less important or clever than they think they are.
- ralph roister doister — a play (1553?) by Nicholas Udall: the earliest known English comedy.
- rap over the knuckles — to reprimand
- reciprocal inhibition — the theory that the pairing of an anxiety-provoking stimulus with anxiety-reducing reactions will weaken the association between the stimulus and the anxiety.
- rectangular hyperbola — a hyperbola with perpendicular asymptotes
- replacement algorithm — The method used to determine which entry in an associative cache to flush to main memory when it is desired to cache a new block of data. The "least recently used" algorithm flushed the block which has not been accessed for the longest time. A random replacement algorithm picks any block with equal probability.
- reverse polish syntax — postfix notation
- schlieren photography — a type of photography which records schlieren
- scorched earth policy — a military practice of devastating the property and agriculture of an area before abandoning it to an advancing enemy.
- scorched-earth policy — a military practice of devastating the property and agriculture of an area before abandoning it to an advancing enemy.
- single spanish burton — a tackle having a runner as well as the fall supporting the load, giving a mechanical advantage of three, neglecting friction.
- social anthropologist — an anthropologist who deals with cultural and social phenomena such as kinship systems or beliefs, esp of nonliterate peoples
- space shuttle orbiter — orbiter (def 1).
- spherical coordinates — Usually, spherical coordinates. any of three coordinates used to locate a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes.
- splice the main brace — to join together or unite (two ropes or parts of a rope) by the interweaving of strands.
- structural psychology — psychology centering on the analysis of the structure or content of conscious mental states by introspective methods.
- the apple of your eye — If you say that someone is the apple of your eye, you mean that they are very important to you and you are extremely fond of them.
- the central provinces — the Canadian provinces of Ontario and Quebec
- theoretical physicist — a scientist who studies theoretical physics
- thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
- thermal power station — a power station in which heat is converted into electricity
- third party liability — Third party liability is insurance against money which an insured may have to pay to third parties if they accidentally cause them injury, loss, or damage.
- threshold wage policy — a policy whereby wages are increased in accordance with inflation
- to fall into the trap — If someone falls into the trap of doing something, they think or behave in a way which is not wise or sensible.
- to play the race card — if someone plays the race card they bring up the issue of race in a discussion, perhaps for sympathy or to seek popularity by appealing to racist sentiment
- triple superphosphate — superphosphate (def 2).
- triple-superphosphate — Also called acid phosphate. a mixture of calcium acid phosphate and calcium sulfate prepared by treating phosphate rock with sulfuric acid: used chiefly as a fertilizer.
- white-knuckle paddler — an inexpert and timid canoeist.
- wildlife photographer — someone that specializes in taking photographs of wild animals, especially in their natural habitats, and plants