18-letter words containing p, a, y, d, i, r
- alpha-hydroxy acid — a type of organic acid, commonly used in skin-care preparations, that has a hydroxyl group attached to the carbon atom next to the carbon atom carrying the carboxyl group
- asymptotic freedom — a property of the force between quarks, according to quantum chromodynamics, such that they behave almost like free particles when they are close together within a hadron.
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- corporate identity — business brand
- cross-disciplinary — linking two or more fields of study
- daisywheel printer — (printer) A kind of impact printer where the characters are arranged on the ends of the spokes of a wheel (resembling the petals on a daisy). The wheel (usually made of plastic) is rotated to select the character to print and then an electrically operated hammer mechanism bends the selected spoke forward slightly, sandwiching an ink ribbon between the character and the paper, as in a typewriter. One advantage of this arrangement over that of a typewriter is that different wheels may be inserted to produce different typefaces.
- decachlorobiphenyl — (organic compound) The fully chlorinated polychlorinated biphenyl containing ten chlorine atoms.
- depository library — a library designated by law to receive without charge all or a selection of the official publications of a government.
- dietary supplement — a substance taken in addition to what you eat in order to promote health
- dimethyltryptamine — a hallucinogenic drug, C 12 H 16 N 2 , with an action of short duration. Abbreviation: DMT.
- diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
- display postscript — An extended form of PostScript permitting its interactive use with bitmap displays.
- disproportionality — not in proportion; disproportionate.
- disproportionately — not proportionate; out of proportion, as in size or number.
- doctype decoration — (humour) When a web author adds a doctype declaration but doesn't bother to write valid HTML.
- dry-powder inhaler — A dry-powder inhaler is a device that delivers medication to the lungs in the form of a dry powder.
- grand penitentiary — See under penitentiary (def 3).
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyperaldosteronism — aldosteronism.
- hypoparathyroidism — Diminished concentration of parathyroid hormone in the blood, which causes deficiencies of calcium and phosphorus compounds in the blood and results in muscular spasms.
- hyposulfurous acid — an acid, H 2 S 2 O 4 , next in a series below sulfurous acid, known only in solution or in the form of its salts.
- interdependability — capable of being depended on; worthy of trust; reliable: a dependable employee.
- lipopolysaccharide — any of a class of polysaccharides to which lipids are attached.
- methylated spirits — ethyl alcohol denatured with methyl alcohol for the purpose of preventing its use as an alcoholic beverage.
- mucopolysaccharide — (formerly) glycosaminoglycan.
- my lips are sealed — If you tell someone that your lips are sealed, you are promising them that you will keep a secret that they have told you.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
- parathyroid glands — any of several small oval glands usually lying near or embedded in the thyroid gland.
- phosphatidylserine — any of a class of phospholipids occurring in biological membranes and fats
- phthalic anhydride — a white, crystalline, slightly water-soluble solid, C 8 H 4 O 3 , used chiefly in the manufacture of dyes, alkyd resins, and plasticizers.
- plenary indulgence — a remission of the total temporal punishment that is still due to sin after absolution. Compare indulgence (def 6).
- population pyramid — a graph showing the distribution of a population by sex, age, etc.
- portrait of a lady — a novel (1881) by Henry James.
- positively charged — having a positive charge
- postviral syndrome — debilitating condition occurring as a sequel to viral illness
- production company — an organization which produces, films, plays, television or radio programmes
- provably difficult — The set or property of problems for which it can be proven that no polynomial-time algorithm exists, only exponential-time algorithms.
- pyramus and thisbe — (in Greek legend) two lovers of Babylon: Pyramus, wrongly supposing Thisbe to be dead, killed himself and she, encountering him in his death throes, did the same
- pyromucic aldehyde — furfural.
- pyrosulphuric acid — a fuming liquid acid made by adding sulphur trioxide to concentrated sulphuric acid. Formula: H2S2O7
- rapid eye movement — rapidly shifting, continuous movements of the eyes beneath closed lids during the stage of sleep characterized by dreaming.
- registered company — a company which has officially registered its business
- richard p. feynman — (person, computing, architecture) /fayn'mn/ 1918-1988. A US physicist, computer scientist and author who graduated from Massachusetts Institute of Technology and Princeton. Feynmane was a key figure in helping Oppenheimer and team develop atomic bomb. In 1950 he became a professor at Caltech and in 1965 became Nobel Prize Laureate in Physics for QED (quantum electrodynamics). He was a primary figure in "solving" the Challenger disaster O-ring problem. He "rediscovered" the former Soviet Socialist Republic of Tuva. The 2001 film "Infinity" about Feynman's early life featured Matthew Broderick and Patricia Arquette. In 2001, "QED", a play about Feynman's life featuring Alan Alda opened.
- secondary syphilis — the second stage of syphilis, characterized by eruptions of the skin and mucous membrane.
- self-deprecatingly — in a self-deprecating manner
- september holidays — a period of time in September when people do not have to go to school, college or work
- solitary sandpiper — a North American sandpiper, Tringa solitaria, of inland wetlands, having a brownish-gray, white-spotted back and whitish underparts.
- subsidiary company — a company whose controlling interest is owned by another company.
- summary proceeding — a mode of trial authorized by statute to be held before a judge without the usual full hearing.
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