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11-letter words containing r, a, k

  • primary key — (database)   A unique identifier, often an integer, that labels a certain row in a table of a relational database. When this value occurs in other tables as a reference to a particular row in the first table it is called a "foreign key". Some RDBMSes can generate a new unique identifier each time a new row is inserted, others merely allow a column to be constrained to contain unique values. A table may have multiple candidate keys, from which the primary key is chosen. The primary key should be an arbitrary value, such as an autoincrementing integer. This avoids dependence on uniqueness, permanence and format of existing columns with real-world meaning (e.g. a person's name) or other external identifier (e.g. social security number). There should be enough possible primary key values to cater for the current and expected number of rows, bearing in mind that a wider column will generally be slower to process.
  • printmaking — the art or technique of making prints, especially as practiced in engraving, etching, drypoint, woodcut or serigraphy.
  • private key — (cryptography)   A piece of data used in private-key cryptography and public-key cryptography. In the former the private key is known by both sender and recipient whereas in the latter it is known only to the sender.
  • privet hawk — a hawk moth, Sphinx ligustri, with a mauve-and-brown striped body: frequents privets
  • prokaryotes — any cellular organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands forming coils or loops, characteristic of all organisms in the kingdom Monera, as the bacteria and blue-green algae.
  • prokaryotic — any cellular organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands forming coils or loops, characteristic of all organisms in the kingdom Monera, as the bacteria and blue-green algae.
  • prony brake — a friction brake serving as a dynamometer for measuring torque.
  • quack grass — a couch grass, Agropyron repens, a pernicious weed in cultivated fields.
  • quacksalver — a quack doctor.
  • quark model — a scheme that explains the quantum numbers of all the baryons and mesons by assuming that baryons are composed of three quarks and mesons of a quark and an antiquark, with different combinations of quark and antiquark flavors giving different sets of quantum numbers.
  • quarterback — a back in football who usually lines up immediately behind the center and directs the offense of the team.
  • quarterdeck — the part of a weather deck that runs aft from the midship area or the mainmast to the stern or poop of a vessel.
  • quick bread — bread, muffins, etc., made with a leavening agent, as baking powder or soda, that permits immediate baking.
  • quick grass — the couch grass, Agropyron repens.
  • quick march — a march in quick time.
  • quick ratio — A quick ratio is a measure of liquidity that is calculated by dividing current assets minus inventories by current liabilities.
  • quick-march — a march in quick time.
  • ra-ra skirt — a short skirt with two or more overlapping 'tiers' of material or flounces (based originally on skirts worn by US cheerleaders)
  • racetracker — a person who regularly attends horse races, especially for the purpose of betting.
  • racewalking — the activity of racing by walking fast rather than running
  • rack-renter — one who pays or exacts rack-rent
  • racket-tail — any of several birds with a racket-shaped tail, such as certain hummingbirds and kingfishers
  • radio knife — an electrical instrument for cutting tissue that by searing severed blood vessels seals them and prevents bleeding.
  • radio shack — a room or structure, as on a ship, for housing radio equipment.
  • rail strike — a strike by railway workers
  • rainbowlike — resembling a rainbow
  • raking bond — a brickwork bond in which concealed courses of diagonally laid bricks are used to bond exposed brickwork to the wall structure.
  • ralik chain — a chain of islands in the W Pacific Ocean, forming the W part of the Marshall Islands.
  • ramakrishna — Sri [sree,, shree] /sri,, ʃri/ (Show IPA), 1836–86, Hindu religious reformer and mystic.
  • random walk — Statistics. the path taken by a point or quantity that moves in steps, where the direction of each step is determined randomly.
  • rankshifted — that has been shifted from one linguistic rank to another
  • ratak chain — a chain of islands in the W Pacific Ocean, forming the E part of the Marshall Islands.
  • rathskeller — (in Germany) the cellar of a town hall, often used as a beer hall or restaurant.
  • ration book — a book showing an individual's entitlement to certain rationed goods
  • rattlesnake — any of several New World pit vipers of the genera Crotalus and Sistrurus, having a rattle composed of a series of horny, interlocking elements at the end of the tail.
  • realpolitik — political realism or practical politics, especially policy based on power rather than on ideals.
  • reawakening — rousing; quickening: an awakening interest in ballet.
  • repeat mark — a sign on a piece of music instructing the player to replay a certain passage or section
  • report back — If you report back to someone, you tell them about something that they asked you to find out about.
  • retail park — A retail park is a large specially built area, usually at the edge of a town or city, where there are a lot of large shops and sometimes other facilities such as cinemas and restaurants.
  • rheumaticky — affected with rheumatism
  • rickettsial — any member of the genus Rickettsia, comprising rod-shaped to coccoid microorganisms that resemble bacteria but can be as small as a large virus and reproduce only inside a living cell, parasitic in fleas, ticks, lice, and mites and transmitted by bite to vertebrate hosts, including humans, causing such severe diseases as typhus and Rocky Mountain spotted fever.
  • ringstraked — ring-streaked.
  • ripple mark — one of the wavy lines or ridges produced, especially on sand, by the action of waves, wind, or the like.
  • ripple-tank — a shallow container of water in which waves are produced by vibrating an object in the water, used to observe or demonstrate wave phenomena.
  • risk factor — a condition, behavior, or other factor that increases risk: Smoking is a major risk factor for cancer; depression as a risk factor in suicide.
  • risk-averse — reluctant to take risks; tending to avoid risks as much as possible: risk-averse entrepreneurs.
  • risk-taking — courting danger or loss
  • road hockey — an imitation of the game of ice hockey played typically by children without ice skates on a public road.
  • rock beauty — a gold and black butterflyfish, Holocanthus tricolor, ranging from the West Indies to Brazil.
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