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19-letter words containing ch

  • okeechobee waterway — a waterway in S Florida from the Atlantic Ocean to the Gulf of Mexico. 155 miles (244 km) long.
  • old church slavonic — the oldest attested Slavic language, an ecclesiastical language written first by Cyril and Methodius in a Bible translation of the 9th century and continued in use for about two centuries. It represents the South Slavic, Bulgarian dialect of 9th-century Salonika with considerable addition of other South and West Slavic elements. Abbreviation: OCS.
  • on an empty stomach — If you do something on an empty stomach, you do it without having eaten.
  • operations research — the analysis, usually involving mathematical treatment, of a process, problem, or operation to determine its purpose and effectiveness and to gain maximum efficiency.
  • palisade parenchyma — the upper layer of ground tissue in a leaf, consisting of elongated cells beneath and perpendicular to the upper epidermis and constituting the primary area of photosynthesis.
  • parachute spinnaker — a very large spinnaker used on a racing yacht.
  • paradichlorobenzene — a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.
  • particle technology — Particle technology is knowledge and study which relates to particles, and is used in industry.
  • paschen-back effect — a splitting of spectral lines observed when the source of a radiation is subjected to a strong magnetic field, caused when the vectors associated with the spin and orbital angular momentum exhibit individual rather than common precession.
  • paumotu archipelago — Tuamotu Archipelago.
  • pied-de-biche spoon — a spoon having a handle with a trifid end.
  • pistachio ice cream — ice cream flavoured with pistachios
  • pocket-handkerchief — handkerchief (def 1).
  • polytene chromosome — a giant, cross-banded chromosome that results from multiple replication of its genetic material with the duplicated chromatin strands remaining closely associated.
  • postsynchronization — the process of adding sound, such as dubbing, to a film or video after shooting or videotaping is completed
  • preach to the choir — to express an opinion to someone who is already in agreement with it
  • prescription charge — a charge, set by the government, to be paid by a patient for medicines
  • priority scheduling — (operating system)   Processes scheduling in which the scheduler selects tasks to run based on their priority as opposed to, say, a simple round-robin. Priorities may be static or dynamic. Static priorities are assigned at the time of creation, while dynamic priorities are based on the processes' behaviour while in the system. For example, the scheduler may favour I/O-intensive tasks so that expensive requests can be issued as early as possible. A danger of priority scheduling is starvation, in which processes with lower priorities are not given the opportunity to run. In order to avoid starvation, in preemptive scheduling, the priority of a process is gradually reduced while it is running. Eventually, the priority of the running process will no longer be the highest, and the next process will start running. This method is called aging.
  • professional school — a postgraduate school or college which trains students for a particular profession
  • 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.
  • proton-proton chain — a series of thermonuclear reactions, responsible for the energy production in stars like the sun, in which the nuclei of hydrogen atoms are transformed into helium nuclei by sequential addition of single hydrogen nuclei.
  • pseudopsychological — of or relating to psychology.
  • psychic determinism — the theory that all aspects of a person's psychological makeup arise from specific causes or forces, as previous experiences or instinctual drives, which may be conscious or unconscious.
  • psychoendocrinology — the study of the relationship between the endocrine system and various symptoms or types of mental illness.
  • psychological novel — a novel that focuses on the complex mental and emotional lives of its characters and explores the various levels of mental activity.
  • psychophysiological — of or relating to psychophysiology.
  • psychotechnological — of or relating to psychotechnology
  • psychrometric chart — a chart for calculating values of relative humidity, absolute humidity, and dew point from psychrometer readings.
  • puerperal psychosis — a mental disorder sometimes occurring in women after childbirth, characterized by deep depression, delusions of the child's death, and homicidal feelings towards the child
  • punch and judy show — A Punch and Judy show is a puppet show for children, often performed at fairs or at the seaside. Punch and Judy, the two main characters, are always fighting.
  • punch-and-judy show — a puppet show having a conventional plot consisting chiefly of slapstick humor and the tragicomic misadventures of the grotesque, hook-nosed, humpback buffoon Punch and his wife Judy.
  • quick-change artist — a person adept at changing from one thing to another, as an entertainer who changes costumes quickly during a performance.
  • radiochromatography — chromatography in which radiolabeled substances on the chromatogram are determined quantitatively or qualitatively by measuring their radioactivity.
  • rancho palos verdes — a town in SW California.
  • reciprocal exchange — an unincorporated association formed so that its members can participate in reciprocal insurance.
  • releasing mechanism — a hypothetical control complex in the central nervous system of animals that triggers the appropriate behavioral response to a releaser.
  • republique malgache — French name of Malagasy Republic.
  • research fellowship — the position or office of someone who conducts academic research into a subject at a university, etc
  • research laboratory — place for scientific experimentation
  • reverse charge call — callee pays fees
  • reverse the charges — If you reverse the charges when you make a telephone call, the person who you are phoning pays the cost of the call and not you.
  • saccharofarinaceous — pertaining to or consisting of sugar and meal.
  • saccharolactic acid — mucic acid.
  • salvage archaeology — the collection of archaeological data and materials from a site in danger of imminent destruction, as from new construction or flooding.
  • samuel de champlain — Samuel de [sam-yoo-uh l duh;; French sa-my-el duh] /ˈsæm yu əl də;; French sa müˈɛl də/ (Show IPA), 1567–1635, French explorer in the Americas: founder of Quebec; first colonial governor 1633–35.
  • sandwich generation — the generation of people still raising their children while having to care for their aging parents.
  • school of the squad — an institution where instruction is given, especially to persons under college age: The children are at school.
  • scratch the surface — examine superficially
  • seleucia tracheotis — an ancient city in SE Asia Minor, on the River Calycadnus (modern Goksu Nehri): captured by the Turks in the 13th century; site of present-day Silifke (Turkey)
  • semidetached binary — a pair of stars that are so close together that mass transfer occurs from one to the other
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