19-letter words that end in n
- normal distribution — a theoretical frequency distribution represented by a normal curve.
- north pacific ocean — the northern part of the Pacific Ocean, extending from the equator to the Arctic Ocean.
- observation balloon — a balloon that is used for gathering information and reconnaissance purposes and spotting aircraft
- old english pattern — a spoon pattern having a stem curving backward at the end.
- on no consideration — for no reason whatsoever; never
- on-again, off-again — being in force or inoperative by turns, especially spasmodically and unpredictably: an on-again, off-again romance.
- once in a blue moon — very rarely; almost never
- oral interpretation — the study and practice of vocally expressing the meaning of written compositions, especially of literature.
- orthopaedic surgeon — a surgeon specializing in the branch of surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
- out of the question — a sentence in an interrogative form, addressed to someone in order to get information in reply.
- over-centralization — the act or fact of centralizing; fact of being centralized.
- over-interpretation — the act of interpreting; elucidation; explication: This writer's work demands interpretation.
- overhead projection — the projection (using an overhead projector) of an enlarged image of a transparency onto a surface above and behind the person using it
- oxidation-reduction — a chemical reaction between two substances in which one substance is oxidized and the other reduced.
- parallel projection — a projection from one plane to a second plane in which the lines joining points on the first plane and corresponding images are parallel.
- parametric equation — one of two or more equations expressing the location of a point on a curve or surface by determining each coordinate separately.
- particle separation — a rule that moves the particle of a phrasal verb, thus deriving a sentence like He looked the answer up from a structure that also underlies He looked up the answer
- particular solution — a solution of a differential equation containing no arbitrary constants.
- pattern recognition — the automated identification of shapes or forms or patterns of speech.
- perfect competition — when neither producer nor consumer controls price
- perpetual adoration — uninterrupted adoration of the Blessed Sacrament.
- phacoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
- phakoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
- photodisintegration — the disintegration of a nucleus, induced by its absorption of a photon.
- photopolymerization — polymerization induced by light.
- piece of the action — the process or state of acting or of being active: The machine is not in action now.
- pied-de-biche spoon — a spoon having a handle with a trifid end.
- planning permission — In Britain, planning permission is official permission that you must get from the local authority before building something new or adding something to an existing building.
- plastic deformation — In plastic deformation a material changes shape when a stress is applied to it and does not go back to its original state when the stress is removed.
- point of inflection — inflection point.
- police intervention — the physical involvement of police officers in an incident, esp where officers use force to control public disorder, such as a riot
- positional notation — a type of numeration in which the position of a digit affects its value.
- postsynchronization — the process of adding sound, such as dubbing, to a film or video after shooting or videotaping is completed
- printing discussion — [XEROX PARC] A protracted, low-level, time-consuming, generally pointless discussion of something only peripherally interesting to all.
- private prosecution — a prosecution started by a private individual rather than by the police
- professionalization — to give a professional character or status to; make into or establish as a profession.
- proto-indo-european — the unattested prehistoric parent language of the Indo-European languages; Indo-European.
- proton-proton chain — a series of thermonuclear reactions, responsible for the energy production in stars like the sun, in which the nuclei of hydrogen atoms are transformed into helium nuclei by sequential addition of single hydrogen nuclei.
- put one's finger on — any of the terminal members of the hand, especially one other than the thumb.
- put one's foot down — (in vertebrates) the terminal part of the leg, below the ankle joint, on which the body stands and moves.
- put one's skates on — ice skate (def 1).
- put sth into action — If you put an idea or policy into action, you begin to use it or cause it to operate.
- ralph waldo emerson — Ralph Waldo [wawl-doh,, wol-] /ˈwɔl doʊ,, ˈwɒl-/ (Show IPA), 1803–82, U.S. essayist and poet.
- rate of penetration — The rate of penetration is the speed with which a drill bit can break the rock under it.
- reactive depression — depression occurring in response to some situational stress, as loss of one's job.
- reconceptualization — to form into a concept; make a concept of.
- recurrence relation — (mathematics) An equation that defines each element of a sequence in terms of one or more earlier elements. E.g. The Fibonacci sequence, X[1] = 1 X[2] = 1 X[n] = X[n-1] + X[n-2] Some recurrence relations can be converted to "closed form" where X[n] is defined purely in terms of n, without reference to earlier elements.
- register allocation — (compiler, algorithm) The phase of a compiler that determines which values will be placed in registers. Register allocation may be combined with register assignment. This problem can be shown to be isomorphic to graph colouring by relating values to nodes in the graph and registers to colours. Values (nodes) which must be valid simultaneously are linked by edges and cannot be stored in the same register (coloured the same). See also register dancing and register spilling.
- regular icosahedron — an icosahedron in which each of the faces is an equilateral triangle
- reindustrialization — the revitalization of an industry or industrial society through government aid and tax incentives, modernization of factories and machinery, etc.