19-letter words containing a, o, r
- kingdom of lorraine — an early medieval kingdom on the Meuse, Moselle, and Rhine rivers: later a duchy
- kirlian photography — a photographic process that supposedly records electrical discharges naturally emanating from living objects, producing an auralike glow surrounding the object on a photographic plate or film with which the object is in direct contact.
- knights hospitalers — a member of the religious and military order (Knights Hospitalers or Knights of St. John of Jerusalem) originating about the time of the first Crusade (1096–99) and taking its name from a hospital at Jerusalem.
- knock-down-drag-out — marked by unrelenting violence: a knock-down-drag-out fight.
- knock-out agreement — an agreement between bidders at an auction or sale not to bid against each other
- know a thing or two — be experienced in sth
- know better than to — not to be so stupid as to
- komandorski islands — a group of islands in the Bering Sea, in NE Russia, E of the Kamchatka Peninsula: U.S.-Japan naval battle, 1943.
- lady baltimore cake — a white layer cake using only the beaten whites of eggs and spread with a fruitnut filling consisting of raisins, figs, walnuts or pecans, and sometimes candied cherries.
- lagrangian function — kinetic potential.
- land of opportunity — Arkansas (used as a nickname).
- language laboratory — a special room or rooms with sound-recording and -reproducing equipment for use by students to practice speaking foreign languages, usually with an instructor monitoring the program.
- lay down one's arms — to stop fighting; surrender
- lay one's finger on — to indicate, identify, or locate accurately
- lead someone astray — If someone or something leads you astray, they make you believe something that is not true, causing you to make a wrong decision.
- lean over backwards — to make a special effort, esp in order to please
- leave the door open — a movable, usually solid, barrier for opening and closing an entranceway, cupboard, cabinet, or the like, commonly turning on hinges or sliding in grooves.
- left-luggage locker — a coin-operated locker in which luggage can be left
- leisure occupations — activities which you enjoy and which you perform in your free time
- let one's hair down — any of the numerous fine, usually cylindrical, keratinous filaments growing from the skin of humans and animals; a pilus.
- liberation theology — a 20th-century Christian theology, emphasizing the Biblical and doctrinal theme of liberation from oppression, whether racial, sexual, economic, or political.
- library of congress — one of the major library collections in the world, located in Washington, D.C., and functioning in some ways as the national library of the U.S. although not officially designated as such: established by Congress in 1800 for service to its members, but now also serving government agencies, other libraries, and the public.
- lie in one's throat — to tell a foul or outrageous lie
- lieutenant governor — a state officer next in rank to a governor, who takes the governor's place in case of the latter's absence, disability, or death.
- lift the curtain on — to begin
- like a dog's dinner — dressed smartly or ostentatiously
- line of demarcation — a separation between things deemed to be distinct
- linear polarization — polarization of light in which the vibrations are confined to a single plane, that of the wave front.
- lipopolysaccharides — Plural form of lipopolysaccharide.
- liquorice all-sorts — a brand of assorted sweets containing liquorice as well as coloured candy made of sugar, gelatine, and coconut
- load-bearing printf — (programming, humour) The kind of bug present in a program which works correctly when producing debug output but fails when the debugging is turned off. The expression combines load-bearing wall and printf as used in debugging by printf.
- lobster-tail helmet — a burgonet fitted with a long, articulated tail of lames for protecting the nape of the neck, worn by cavalry in the 17th century.
- local area terminal — (protocol) (LAT) A DECnet-related, non-routable network protocol.
- logical shift right — logical shift
- logical unit number — (storage) (LUN) A 3-bit identifier used on a SCSI bus to distinguish between up to eight devices (logical units) with the same SCSI ID.
- long-and-short work — an arrangement of rectangular quoins or jambstones set alternately vertically and horizontally.
- longitudinal parity — (storage, communications) An extra byte (or word) appended to a block of data in order to reveal corruption of the data. Bit n of this byte indicates whether there was an even or odd number of "1" bits in bit position n of the bytes in the block. The parity byte is computed by XORing the data bytes in the block. Longitudinal parity allows single bit errors to be detected.
- lord baltimore cake — a yellow layer cake, using only the yolks of eggs and having a fruit-nut filling consisting of pecans, almonds, maraschino cherries, and macaroon crumbs.
- lose one's heart to — to fall in love with
- loss on translation — A loss on translation is the amount of money that is lost by a company by converting another currency used in a transaction into the functional currency of the company.
- love at first sight — instant romantic attraction to sb
- lucia di lammermoor — an opera (1835) by Gaetano Donizetti, based on Sir Walter Scott's novel The Bride of Lammermoor.
- lumholtz's kangaroo — boongary.
- lupus erythematosus — any of several autoimmune diseases, especially systemic lupus erythematosus, characterized by red, scaly skin patches.
- lymphoproliferation — (medicine) the excessive production of lymphocytes.
- lymphoproliferative — Characterized by lymphoproliferation.
- lyon office of arms — Heralds' Office.
- macaroni and cheese — pasta with cheese sauce
- machine instruction — (programming) The smallest element of a machine code program.
- machine translation — changing language of a text by computer