16-letter words containing a, d, u, p
- perpendicularity — vertical; straight up and down; upright.
- persulfuric acid — Also called Caro's acid, permonosulfuric acid, peroxymonosulfuric acid, peroxysulfuric acid. a white, crystalline solid, H 2 SO 5 , used as an oxidizing agent for certain organic compounds.
- phase modulation — radio transmission in which the carrier wave is modulated by changing its phase to transmit the amplitude and pitch of the signal.
- phosphorous acid — a colorless, crystalline, water-soluble acid of phosphorus, H 3 PO 3 , from which phosphites are derived.
- picture postcard — postcard (def 1).
- platinum-iridium — (standard) A standard, against which all others of the same category are measured. Usage: silly. The notion is that one of whatever it is has actually been cast in platinum-iridium alloy and placed in the vault beside the Standard Kilogram at the International Bureau of Weights and Measures near Paris, as the bar defining the standard metre once was. "This garbage collection algorithm has been tested against the platinum-iridium cons cell in Paris." Compare golden.
- pleased as punch — the chief male character in a Punch-and-Judy show.
- portmanteau word — a case or bag to carry clothing in while traveling, especially a leather trunk or suitcase that opens into two halves.
- portuguese india — a former Portuguese overseas territory on the W coast of India, consisting of the districts of Gôa, Daman, and Diu: annexed by India December 1961. Capital: Gôa.
- potassium iodide — a white, crystalline, water-soluble powder, KI, having a bitter saline taste: used chiefly in the manufacture of photographic emulsions, as a laboratory reagent, in the preparation of Gram's solution for biological staining, and in medicine as an expectorant and to treat thyroid conditions.
- praetorian guard — the bodyguard of a military commander, especially the imperial guard stationed in Rome.
- pressure-treated — (of wood) treated with a chemical or chemicals applied under pressure to reduce such problems as insect infestation, decay, and rotting.
- preunderstanding — to perceive the meaning of; grasp the idea of; comprehend: to understand Spanish; I didn't understand your question.
- primary industry — an industry, as agriculture, forestry, or fishing, that deals in obtaining natural materials.
- primary producer — any green plant or any of various microorganisms that can convert light energy or chemical energy into organic matter.
- private judgment — personal opinion formed independently of the expressed position of an institution, as in matters of religion or politics.
- project guardian — (project, security) A project which grew out of the ARPA support for Multics and the sale of Multics systems to the US Air Force. The USAF wanted a system that could be used to handle more than one security classification of data at a time. They contracted with Honeywell and MITRE Corporation to figure out how to do this. Project Guardian led to the creation of the Access Isolation Mechanism, the forerunner of the B2 labeling and star property support in Multics. The DoD Orange Book was influenced by the experience in building secure systems gained in Project Guardian.
- pseudo-isidorian — of or relating to the collection of documents of the 9th century a.d. that consist chiefly of the Decretals, attributed to Isidore, archbishop of Seville, a.d. 600–36, and that were rejected as spurious in the 15th century.
- pseudo-patriotic — of, like, suitable for, or characteristic of a patriot.
- pseudo-political — of, relating to, or concerned with politics: political writers.
- pseudo-realistic — interested in, concerned with, or based on what is real or practical: a realistic estimate of costs; a realistic planner.
- pseudo-spiritual — of, relating to, or consisting of spirit; incorporeal.
- pseudocopulation — pollination of plants, esp orchids, by male insects while attempting to mate with flowers that resemble the female insect
- pseudohemophilia — a clotting disorder caused by abnormal factor VIII activity, and characterized by a prolonged bleeding time but without the delayed coagulation time of hemophilia.
- pseudohistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- pseudoparenchyma — (in certain fungi and red algae) a compact mass of tissue, made up of interwoven hyphae or filaments, that superficially resembles plant tissue.
- pseudoperipteral — having a freestanding colonnade at each end, with engaged columns at the sides.
- publication date — the date on which a book or periodical is or is planned to be published.
- puddling-furnace — the act of a person or thing that puddles.
- pullorum disease — a highly contagious, frequently fatal disease of young poultry caused by the bacterium Salmonella gallinarum (pullorum), transmitted by the infected hen during egg production, and characterized by weakness, loss of appetite, and diarrhea.
- pulse modulation — a type of modulation in which a train of pulses is used as the carrier wave, one or more of its parameters, such as amplitude, being modulated or modified in order to carry information
- punitive damages — law: penalty payment
- purple sandpiper — a sandpiper, Calidris maritima, of arctic regions of the New and Old World, having in winter a slate-gray back with purplish reflections.
- put in the shade — to appear better than (another); surpass
- pyruvic aldehyde — a yellow, liquid compound, C 3 H 4 O 2 , containing both an aldehyde and a ketone group, usually obtained in a polymeric form: used chiefly in organic synthesis.
- quasi-diplomatic — of, relating to, or engaged in diplomacy: diplomatic officials.
- reconceptualized — to form into a concept; make a concept of.
- redemption value — the price at which the issuing company may choose to repurchase a security before its maturity date
- refinery upgrade — A refinery upgrade is the process of introducing the newest technology in some parts of the refinery.
- sculpture garden — a garden that showcases sculptures in landscaped surroundings
- seward peninsula — a peninsula in W Alaska, on Bering Strait.
- sleeping draught — any drink containing a drug or agent that induces sleep
- sodium pentothal — the sodium salt of thiopental sodium.
- sodium perborate — a white, crystalline, water-soluble solid, NaBO 2 ⋅3H 2 O or NaBO 3 ⋅4H 2 O, used chiefly as a bleaching agent and antiseptic.
- sodium phosphate — Also called monobasic sodium phosphate. a white, crystalline, slightly hygroscopic, water-soluble powder, NaH 2 PO 4 , used chiefly in dyeing and in electroplating.
- south plainfield — a city in N New Jersey.
- southern uplands — a hilly region extending across S Scotland: includes the Lowther, Moorfoot, and Lammermuir hills
- spit-and-sawdust — (of a pub) shabby, dirty, and basic
- stage production — a play or show which is performed on stage
- stalked puffball — a puffball-like mushroom of the genus Tulestoma, maturing in early winter.