13-letter words containing p, r, o, l, n
- laryngoscopic — Of or pertaining to laryngoscopy.
- 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.
- leap-frogging — a game in which players take turns in leaping over another player bent over from the waist.
- 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
- linkage group — a group of genes in a chromosome that tends to be inherited as a unit.
- lithographing — Present participle of lithograph.
- lithontriptic — of or relating to destroying bladder or kidney stones
- 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.
- lycanthropous — Lycanthropic.
- macroplankton — planktonic organisms of about 1 mm in length.
- major penalty — a penalty consisting of the removal of a player for five minutes from play, no substitute for the player being permitted.
- malabsorption — faulty absorption of nutritive material from the intestine.
- malonyl group — the bivalent group C 3 H 2 O 2 , derived from malonic acid.
- melbourne cup — an annual horse race run in Melbourne, since 1861
- merleau-ponty — Maurice, 1908–61, French phenomenological philosopher.
- methylpropane — (organic compound) isobutane.
- methylpropene — (organic compound) IUPAC name for isobutylene.
- metropolitans — Plural form of metropolitan.
- microplankton — plankton visible as individual organisms only with the aid of a microscope, which excludes most animal plankton.
- minor penalty — a penalty consisting of the removal of a player from play for two minutes, no substitute for the player being permitted.
- mongol empire — an empire founded in the 12th century by Genghis Khan, which reached its greatest territorial extent in the 13th century, encompassing the larger part of Asia and extending westward to the Dnieper River in eastern Europe.
- mount palomar — Mount, a mountain in S California, NE of San Diego: site of observatory. 6126 feet (1867 meters) high.
- myringoplasty — (surgery) The closure of the perforation of pars tensa of the tympanic membrane.
- nanoparticles — Plural form of nanoparticle.
- national park — an area of scenic beauty, historical importance, or the like, owned and maintained by a national government for the use of the people.
- natural slope — the maximum angle at which soil will lie in a bank without slipping
- necrophiliacs — Plural form of necrophiliac.
- nephelometers — Plural form of nephelometer.
- nephelometric — Bacteriology. an apparatus containing a series of barium chloride standards used to determine the number of bacteria in a suspension.
- nephrological — of or relating to nephrology
- neuroatypical — Having an atypical neurological configuration.
- neurosyphilis — Syphilis that involves the central nervous system.
- nominal group — A nominal group is the same as a noun group.
- non-corporeal — of the nature of the physical body; bodily.
- non-empirical — derived from or guided by experience or experiment.
- non-ephemeral — lasting a very short time; short-lived; transitory: the ephemeral joys of childhood.
- non-repayable — to pay back or refund, as money.
- non-reputable — held in good repute; honorable; respectable; estimable: a reputable organization.
- non-spherical — having the form of a sphere; globular.
- noncomparable — not comparable
- noncompulsory — Not compulsory.
- nondescriptly — in a nondescript manner
- nonperiodical — a magazine or other journal that is issued at regularly recurring intervals.
- nonperishable — not subject to rapid deterioration or decay: A supply of nonperishable food was kept for emergencies.
- nonprofitable — Not profitable; not making profit.
- nonprovincial — Not restricted to a small region; not done in isolation.
- nonreciprocal — given or felt by each toward the other; mutual: reciprocal respect.