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17-letter words containing p, a, r, o

  • laryngopharyngeal — of, relating to, or involving the larynx and pharynx.
  • least upper bound — an upper bound that is less than or equal to all the upper bounds of a particular set. 3 is the least upper bound of the set consisting of 1, 2, 3. Abbr.: lub.
  • legal proceedings — court case
  • lempert operation — fenestration (def 3c).
  • level compensator — an automatic gain control device used in the receivers of telegraphic circuits.
  • lexicographically — the writing, editing, or compiling of dictionaries.
  • life of the party — most lively, outgoing person
  • lincoln's sparrow — a North American sparrow, Melospiza lincolnii, having a buff breast with black streaks.
  • lipopolysaccaride — a molecule, consisting of lipid and polysaccharide components, that is the main constituent of the cell walls of Gram-negative bacteria
  • liquid petrolatum — mineral oil.
  • liquid propellant — a rocket propellant in liquid form.
  • lithostratigraphy — the study or character of stratified rocks based solely on their physical and petrographic features.
  • loco primo citato — loc. primo cit.
  • loco supra citato — l.s.c.
  • logic programming — (artificial intelligence, programming, language)   A declarative, relational style of programming based on first-order logic. The original logic programming language was Prolog. The concept is based on Horn clauses. The programmer writes a "database" of "facts", e.g. wet(water). ("water is wet") and "rules", e.g. mortal(X) :- human(X). ("X is mortal is implied by X is human"). Facts and rules are collectively known as "clauses". The user supplies a "goal" which the system attempts to prove using "resolution" or "backward chaining". This involves matching the current goal against each fact or the left hand side of each rule using "unification". If the goal matches a fact, the goal succeeds; if it matches a rule then the process recurses, taking each sub-goal on the right hand side of the rule as the current goal. If all sub-goals succeed then the rule succeeds. Each time a possible clause is chosen, a "choice point" is created on a stack. If subsequent resolution fails then control eventually returns to the choice point and subsequent clauses are tried. This is known as "backtracking". Clauses may contain logic variables which take on any value necessary to make the fact or the left hand side of the rule match a goal. Unification binds these variables to the corresponding subterms of the goal. Such bindings are associated with the choice point at which the clause was chosen and are undone when backtracking reaches that choice point. The user is informed of the success or failure of his first goal and if it succeeds and contains variables he is told what values of those variables caused it to succeed. He can then ask for alternative solutions.
  • logical operation — Boolean operation.
  • lower paleolithic — See under Paleolithic.
  • lumpenproletariat — the lowest level of the proletariat comprising unskilled workers, vagrants, and criminals and characterized by a lack of class identification and solidarity.
  • lymphangiographic — Relating to lymphangiography.
  • malay archipelago — an extensive island group in the Indian and Pacific oceans, SE of Asia, including the Greater and Lesser Sunda Islands, the Moluccas, and the Philippines.
  • manhattan project — U.S. History. the unofficial designation for the U.S. War Department's secret program, organized in 1942, to explore the isolation of radioactive isotopes and the production of an atomic bomb: initial research was conducted at Columbia University in Manhattan.
  • manpower planning — a procedure used in organizations to balance future requirements for all levels of employee with the availability of such employees
  • mariner's compass — a compass used for navigational purposes, consisting of a pivoted compass card in a gimbal-mounted, nonferrous metal bowl.
  • mascarpone cheese — a very rich, white cream cheese of Italy
  • mass spectrograph — a mass spectroscope for recording a mass spectrum on a photographic plate.
  • mass spectrometer — a device for identifying the kinds of particles present in a given substance: the particles are ionized and beamed through an electromagnetic field and the manner in which they are deflected is indicative of their mass and, thus, their identity.
  • mass spectroscope — an instrument used to determine the masses of small, electrically charged particles.
  • mass spectroscopy — an instrument used to determine the masses of small, electrically charged particles.
  • matter of opinion — a point open to question; a debatable statement
  • mayflower compact — an agreement to establish a government, entered into by the Pilgrims in the cabin of the Mayflower on November 11, 1620.
  • mean proportional — (between two numbers a and b) a number x for which a/x = x/b : The number 3 is a mean proportional between 1 and 9.
  • medical procedure — A medical procedure is a medical treatment or operation.
  • meissen porcelain — Dresden china.
  • metalloproteinase — (enzyme) Any of several proteinases that have a metal atom (often zinc) at their active centre.
  • metaperiodic acid — the crystalline compound HIO4, an oxyacid of iodine
  • microencapsulated — Encapsulated using microencapsulation.
  • micromanipulation — the technique of performing mechanical operations under high magnification through the use of specialized tools.
  • micromanipulators — Plural form of micromanipulator.
  • micropaleontology — the branch of paleontology dealing with the study of microscopic fossils.
  • microphanerophyte — any shrub or tree having a height of 2 to 8 metres
  • microphotographic — Relating to microphotography.
  • midmorning prayer — the third of the seven canonical hours; terce
  • misappropriations — Plural form of misappropriation.
  • misinterpretation — An instance of misinterpreting.
  • misrepresentation — to represent incorrectly, improperly, or falsely.
  • mitre corporation — (body)   A US federally funded R&D center, spun off in 1958 from the MIT Lincoln Laboratory (also an FFRDC). MITRE is a non-profit corporation chartered to do R&D in the public interest. MITRE were responsible for system engineering and implementation oversight of SAGE. MITRE does not stand for MIT Research and Engineering, though it could have.
  • mode of transport — means of travel
  • modern pentathlon — an athletic contest consisting of five different events: horse riding with jumps, fencing with electric épée, freestyle swimming, pistol shooting, and cross-country running
  • modular sb-prolog — Modular Prolog
  • mom and pop store — a small retail business, typically family-operated
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