18-letter words containing t, r, a, c, k, l
- alarm clock briton — a British worker with a moderate income, whose daily routine involves preparing children for school and going out to work
- asiatic black bear — a bear, Selenarctos thibetanus, of central and E Asia, whose coat is black with a pale V-shaped mark on the chest
- astronomical clock — a complex clock showing astronomical phenomena, such as the phases of the moon
- basket-handle arch — an arch having a symmetrical form drawn from an odd number of radii in excess of one, which increase in length from the springing toward the center.
- black lives matter — a political and social movement originating among African Americans, emphasizing basic human rights and racial equality for black people and campaigning against various forms of racism. Abbreviations: BLM, B.L.M.
- black-necked stork — a large Australian stork, Xenorhyncus asiaticus, having a white plumage, dark green back and tail, and red legs
- blackwater rafting — the sport of riding through underground caves on a large rubber tube
- blocking capacitor — a capacitor that blocks the passage of direct current but allows alternating current to pass
- branch to fishkill — (IBM: from the location of one of the corporation's facilities) Any unexpected jump in a program that produces catastrophic or just plain weird results. See jump off into never-never land, hyperspace.
- carisbrooke castle — a castle near Newport on the Isle of Wight: Charles I was held prisoner here from 1647 until his execution in 1649
- catalytic cracking — a method used in the petroleum industry for the cracking of petroleum by catalysis
- checkpoint charlie — a crossing between East and West Berlin during the Cold War
- clark's nutcracker — a nutcracker, Nucifraga columbiana, of western North America, having pale gray plumage and black and white wings and tail.
- classical sanskrit — Sanskrit of an ancient period earlier than that of the Prakrits and later than Vedic.
- cracked distillate — A cracked distillate is a clear yellow liquid, mostly containing hydrocarbons, which is produced by steam cracking without a catalyst.
- diamondback turtle — any edible North American terrapin of the genus Malaclemys, esp M. terrapin, occurring in brackish and tidal waters and having diamond-shaped markings on the shell: family Emydidae
- drinking chocolate — sweetened cocoa powder
- electronic banking — the transfer of money between financial institutions through an exchange of electronic signals over a network
- great-circle track — the route of a ship following the arc of a great circle, appearing as a curved line on a Mercator chart and as a straight line on a gnomonic chart.
- handkerchief table — corner table.
- health care worker — A health care worker is someone who works in a hospital or health centre.
- incremental backup — (operating system) A kind of backup that copies all files which have changed since the date of the previous backup. The first backup of a file system should include all files - a "full backup". Call this level 0. The next backup could also be a full level 0 backup but it is usually much quicker to do a level 1 backup which will include only those files which have changed since the level 0 backup. Together the level 0 and level 1 backups will include the latest version of every file. Level 1 backups can be made until, say, the backup tape is nearly full, after which we can switch to level 2. Each level includes those files which have changed since the last backup at a lower level. The more levels you use, the longer it will take to restore the latest version of a file (or all files) if you don't know when it was last modified. Compare differential backup.
- jack of all trades — a person who is adept at many different kinds of work.
- jack-of-all-trades — a person who is adept at many different kinds of work.
- kentucky bluegrass — a grass, Poa pratensis, of the Mississippi valley, used for pasturage and lawns.
- killer application — a highly innovative, very powerful, or extremely useful computer application; esp one sufficiently important as to justify purchase of the equipment or software
- knotted cranesbill — a British wildflower, Geranium nodosum, an meadow geranium with bright pink or purple flowers
- labeled bracketing — a representation of the constituent structure of a string, as a word or sentence, comparable to a tree diagram, in which each constituent is shown in brackets and given a subscript grammatical label, with each bracketed item corresponding to a node in a tree diagram.
- lake pontchartrain — a shallow lagoon in SE Louisiana, linked with the Gulf of Mexico by a narrow channel, the Rigolets: resort and fishing centre. Area: 1620 sq km (625 sq miles)
- leatherback turtle — a sea turtle, Dermochelys coriacea, having the shell embedded in a leathery skin, reaching a length of more than 7 feet (2.1 meter) and a weight of more than 1000 pounds (450 kg): the largest living sea turtle; an endangered species.
- local area network — a system for linking private telecommunications equipment, as in a building or cluster of buildings.
- long-stay car park — a car park (eg at an airport) where cars can be left for a long time
- optical disk drive — (hardware) (Or "optical disc drive", "optical storage") A generic term for any device that reads and/or writes optical media, i.e. compact discs, DVDs and/or Blu-ray discs or future media that uses light (from a small laser) to read data off a removable, rotating disk. At least one such drive is commonly installed in most personal computers to allow them to play and/or record audio and video media and load and store data such as program installers. The floppy disk has been replaced by optical media due to its vastly greater capacity, e.g. 50,000 megabytes for a dual-layer blu-ray disc compared with 1.5 megabytes for a floppy (over 30,000 times as much).
- optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
- oriental cockroach — a dark-brown cockroach, Blatta orientalis, thought to have originated in Asia but now nearly cosmopolitan in distribution.
- people trafficking — the practice of bringing immigrants into a country illegally
- percentile ranking — the percentage of scores that a particular score is greater than
- societal marketing — marketing that takes into account society's long-term welfare
- software backplane — (programming, tool) A CASE framework from Atherton.
- stokely carmichael — Hoagland Howard [hohg-luh nd] /ˈhoʊg lənd/ (Show IPA), ("Hoagy") 1899–1981, U.S. songwriter and musician.
- task control block — (architecture) An MVS control block used to communicate information about tasks within an address space that are connected to an MVS subsystem such as MQSeries for MVS/ESA or CICS.
- the-cocktail-party — a play in verse (1950) by T. S. Eliot.
- to clear the decks — If you clear the decks, you get ready to start something new by finishing any work that has to be done or getting rid of any problems that are in the way.
- trickle irrigation — drip irrigation.
- truck center plate — one of a pair of plates that fit together and support the body of a car on a truck, while allowing the truck to rotate with respect to the body. One plate (body center plate) is attached to the underside of the car body and the other (truck center plate) is part of the car truck.
- watson-crick model — a widely accepted model for the three-dimensional structure of DNA, featuring a double-helix configuration for the molecule's two hydrogen-bonded complementary polynucleotide strands.
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