13-letter words containing r, e, n, o, l
- ladino clover — a giant variety of white clover, Trifolium repens lodigense, used for pasture and hay.
- laevorotation — a rotation to the left
- lake sturgeon — a sturgeon, Acipenser fulvescens, of the Great Lakes and Mississippi and St. Lawrence rivers.
- lambeosaurine — Any crested hadrosaurid dinosaur of the subfamily Lambeosaurinae.
- landing force — the ground forces of an amphibious task force that effect the assault landing in an amphibious operation.
- landownership — an owner or proprietor of land.
- lantern clock — an English bracket clock of the late 16th and 17th centuries, having a brass case with corner columns supporting pierced crestings on the sides and front.
- laryngectomee — someone who has had a laryngectomy
- laryngoscopes — Plural form of laryngoscope.
- laryngotomies — Plural form of laryngotomy.
- laser cooling — a technique using laser light to cool atoms to a very low temperature by removing momentum from the particles.
- laser pointer — a portable laser that emits monochromatic light over a long and narrow distance, used especially as a pointing device.
- latent period — Also, latency period. Pathology. the interval between exposure to a carcinogen, toxin, or disease-causing organism and development of a consequent disease.
- lateroversion — abnormal lateral displacement of a bodily organ or part, esp of the uterus
- law and order — strict control of crime and repression of violence, sometimes involving the possible restriction of civil rights.
- law of nature — an empirical truth of great generality, conceived of as a physical (but not a logical) necessity, and consequently licensing counterfactual conditionals
- law stationer — a stationer selling articles used by lawyers
- law-and-order — strict control of crime and repression of violence, sometimes involving the possible restriction of civil rights.
- leap-frogging — a game in which players take turns in leaping over another player bent over from the waist.
- lecherousness — The property of being lecherous.
- lecture notes — notes that are taken by someone attending a lecture
- legionary ant — army ant
- lemon verbena — a plant, Aloysia triphylla, having long, slender leaves with a lemonlike fragrance.
- leonine rhyme — the form of internal rhyme used in leonine verse.
- leonine verse — a form of verse, based upon an earlier Latin form, with a rhyme scheme that requires the last word in a line to rhyme with the word just before a caesura or with a word near the middle of the line.
- lepidopterans — Plural form of lepidopteran.
- lepton number — in a process involving elementary particles, the total number of leptons minus the total number of antileptons.
- letter opener — bladed tool for opening envelopes
- leucitohedron — a trapezohedron
- levant dollar — a silver coin, either a Maria Theresa thaler or an imitation of one, formerly used for trade with Abyssinia, Eritrea, Aden, etc. Imitations bear the date 1780 regardless of the year of minting.
- levant storax — a solid resin with a vanillalike odor, obtained from a small tree, Styrax officinalis: formerly used in medicine and perfumery.
- levelling rod — a graduated rod that is used to determine differences in elevation
- liberationism — the principles of liberationists
- liberationist — the act of liberating or the state of being liberated.
- lincoln green — an olive-green color.
- line of force — an imaginary line representing a field of force, such as an electric or magnetic field, such that the tangent at any point is the direction of the field vector at that point
- linearisation — Alternative spelling of linearization.
- linearization — The modification of a system such that its output is linearly dependent on its input.
- linkage group — a group of genes in a chromosome that tends to be inherited as a unit.
- loebner prize — (artificial intelligence) An annual competition in artificial intelligence started by Dr. Hugh Loebner of New York City in 1991. A $100,000 prize is offered to the author of the first computer program to pass an unrestricted Turing test. Annual competitions are held each year with a $2000 prize for the best program on a restricted Turing test. Sponsors of previous competitions include: Apple Computer, Computerland, Crown Industries, GDE Systems, IBM Personal Computer Company's Center for Natural Computing, Greenwich Capital Markets, Motorola, the National Science Foundation, The Alfred P. Sloan Foundation, and The Weingart Foundation. The 1995 and 1996 events were unrestricted Turing Tests, requiring computer entries to converse indefinitely with no topic restrictions. So far, even the best programs give themselves away almost immediately, either by simple grammatical mistakes or by repetition. Complete transcripts and IBM compatible diskettes that play the 1991, 1992, and 1993 conversations in real-time are available for purchase from the Cambridge Center for Behavioral Studies (telephone: +1 (617) 491 9020, Fax: 1072). Sponsorship opportunities are available.
- london bridge — a bridge over the Thames between the City of London on the north side, and Southwark on the south side.
- london rocket — the plant Sisymbrium irio
- lonely hearts — of or for people seeking counseling or companionship to bring love or romance into their lives: a lonely-hearts column in the newspaper.
- lonely-hearts — of or for people seeking counseling or companionship to bring love or romance into their lives: a lonely-hearts column in the newspaper.
- long trousers — full-length trousers (as opposed to shorts)
- longsuffering — enduring injury, trouble, or provocation long and patiently.
- lorentz force — the force on a charged particle moving through a region containing both electric and magnetic fields.
- losing streak — a succession of losses or defeats
- lounge around — to pass time idly and indolently.
- lounge lizard — a foppish man who frequents bars, cafés, hotel lounges, etc., with or in search of women.