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13-letter words containing l, e, p, n

  • leptomeninges — The inner two meninges, the arachnoid and the pia mater, between which circulates the cerebrospinal fluid.
  • 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
  • letterspacing — the amount of space between each letter in a word, or the adjustment of this amount of space
  • level pegging — If two opponents in a competition or contest are level pegging, they are equal with each other.
  • license plate — a plate or tag, usually of metal, bearing evidence of official registration and permission, as for the use of a motor vehicle.
  • like ninepins — If you say that people or things are going down like ninepins, you mean that large numbers of them are suddenly becoming ill, collapsing, or doing very badly.
  • line spectrum — an electromagnetic spectrum consisting of discrete lines, usually characteristic of excited atoms or molecules.
  • linkage group — a group of genes in a chromosome that tends to be inherited as a unit.
  • little prince — an allegorical fantasy (1943) by Antoine de Saint-Exupéry.
  • loblolly pine — a coniferous tree, Pinus taeda, of the southeastern U.S., having bundles of stout often twisted needles and blackish-gray bark.
  • locking piece — (in a striking train) a hooked part, rising and falling on a locking plate and arresting the rotation of the plate after the proper number of strokes.
  • locking plate — a narrow wheel geared to a striking train or other mechanism and having a notched rim engaging with another mechanism permitting it to rotate through a specific arc.
  • 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.
  • longleaf pine — an American pine, Pinus palustris, valued as a source of turpentine and for its timber.
  • loop of henle — the part of a nephron between the proximal and distal convoluted tubules that extends, in a loop, from the cortex into the medulla of the kidney.
  • lunar eclipse — Astronomy. the obscuration of the light of the moon by the intervention of the earth between it and the sun (lunar eclipse) or the obscuration of the light of the sun by the intervention of the moon between it and a point on the earth (solar eclipse) a similar phenomenon with respect to any other planet and either its satellite or the sun. the partial or complete interception of the light of one component of a binary star by the other.
  • lymphadenitis — inflammation of a lymphatic gland.
  • lymphopoietin — (protein) A cytokine protein that has a function in T cell maturation.
  • macrencephaly — The presence of an abnormally large brain.
  • magnetic pole — the region of a magnet toward which the lines of magnetic induction converge (south pole) or from which the lines of induction diverge (north pole)
  • mainz psalter — a book printed by Johannes Gutenberg: thought by some to be the first book printed from movable type.
  • major penalty — a penalty consisting of the removal of a player for five minutes from play, no substitute for the player being permitted.
  • maldeployment — the inefficient use of resources or an instance of such
  • manipulatable — to manage or influence skillfully, especially in an unfair manner: to manipulate people's feelings.
  • manipulatives — influencing or attempting to influence the behavior or emotions of others for one’s own purposes: a manipulative boss.
  • marlinespikes — Plural form of marlinespike.
  • meeting place — A meeting place is a place where people meet.
  • megalopolitan — of, relating to, or characteristic of a megalopolis.
  • melbourne cup — an annual horse race run in Melbourne, since 1861
  • melting point — the temperature at which a solid substance melts or fuses.
  • merleau-ponty — Maurice, 1908–61, French phenomenological philosopher.
  • mesencephalic — Anatomy. the midbrain.
  • mesencephalon — Anatomy. the midbrain.
  • metallophones — Plural form of metallophone.
  • metencephalon — the anterior section of the hindbrain, comprising the cerebellum and pons.
  • metenkephalin — either of two pentapeptides that bind to morphine receptors in the central nervous system and have opioid properties of relatively short duration; one pentapeptide (Met enkephalin) has the amino acid sequence Tyr-Gly-Gly-Phe-Met and the other (Leu enkephalin) has the sequence Tyr-Gly-Gly-Phe-Leu.
  • methylparaben — a fine, white, needlelike substance, C 8 H 8 O 3 , used chiefly as a preservative in foods and pharmaceuticals.
  • methylpropane — (organic compound) isobutane.
  • methylpropene — (organic compound) IUPAC name for isobutylene.
  • metropolitans — Plural form of metropolitan.
  • mexican apple — a tropical American tree, Casimiroa edulis, of the rue family, having greenish, inconspicuous flowers and tomatolike fleshy fruit that is yellow on the inside and gray or yellowish-green on the outside.
  • milk saucepan — a type of small saucepan often used for heating milk
  • mine disposal — the removal, disarming, or destruction of explosive mines
  • mineral pitch — asphalt.
  • minor penalty — a penalty consisting of the removal of a player from play for two minutes, no substitute for the player being permitted.
  • mis-explained — to make plain or clear; render understandable or intelligible: to explain an obscure point. Synonyms: explicate. Antonyms: confuse.
  • mise en place — (in a restaurant kitchen) the preparation of equipment and food before service begins
  • misemployment — Wrong or mistaken employment.
  • mock pendulum — a false pendulum bob attached to the balances of certain timepieces and visible through a slot in the dial or case.
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