19-letter words containing p, a, n
- instant photography — photography using an instant camera.
- instantaneous speed — a scalar measure of the rate of movement of a body expressed as the rate of change of position with respect to time at a particular point. It is measured in metres per second, miles per hour, etc
- intangible property — intellectual property, rights ownership
- intercardinal point — any of the four points of the compass midway between the cardinal points; northeast, southeast, southwest, or northwest.
- interdepartmentally — involving or existing between two or more departments: interdepartmental rivalry.
- interdisciplinarity — Any academic or scientific study that draws on the expertise of more than one discipline.
- intergalactic space — the region of physical space that exists between galaxies. The density is negligible, and close to an almost total vacuum
- international pitch — diapason normal pitch.
- interrogation point — question mark.
- invasion of privacy — an encroachment upon the right to be let alone or to be free from publicity.
- iphigenia in tauris — a drama (413? b.c.) by Euripides.
- irish water spaniel — one of an Irish breed of large water spaniels having a thick, curly, liver-colored coat, a topknot of long, loose curls, and a thin, tapering tail covered with short hair.
- isenheim altarpiece — an altarpiece (1510?–15?) painted by Matthias Grünewald.
- isobutyl propionate — a colorless liquid, C 7 H 14 O 2 , used chiefly as a paint, varnish, and lacquer solvent.
- iterative deepening — (algorithm) A graph search algorithm that will find the shortest path with some given property, even when the graph contains cycles. When searching for a path through a graph, starting at a given initial node, where the path (or its end node) has some desired property, a depth-first search may never find a solution if it enters a cycle in the graph. Rather than avoiding cycles (i.e. never extend a path with a node it already contains), iterative deepening explores all paths up to length (or "depth") N, starting from N=0 and increasing N until a solution is found.
- japanese arborvitae — a Japanese evergreen tree, Thuja standishii, having spreading branches with bright-green leaves.
- japanese black pine — a pine, Pinus thunbergiana, of Japan, grown as a seaside ornamental in the U.S.
- japanese lawn grass — an Asiatic creeping grass, Zoysia japonica, used especially in the southeastern U.S., having purplish spikelets and rootstalks that send up numerous tough, wiry shoots.
- joint-stock company — an association of individuals in a business enterprise with transferable shares of stock, much like a corporation except that stockholders are liable for the debts of the business.
- judicial separation — a decree of legal separation of spouses that does not dissolve the marriage bond.
- jumping bristletail — any of several thysanuran insects that live in dark, warm, moist places, as under leaves, bark, and dead tree trunks and along rocky seacoasts, and are active jumpers, making erratic leaps when disturbed.
- jumping plant louse — any of numerous lice, of the family Psyllidae, that feed on plant juices and are sometimes pests of fruits and vegetables.
- keep an eye out for — the organ of sight, in vertebrates typically one of a pair of spherical bodies contained in an orbit of the skull and in humans appearing externally as a dense, white, curved membrane, or sclera, surrounding a circular, colored portion, or iris, that is covered by a clear, curved membrane, or cornea, and in the center of which is an opening, or pupil, through which light passes to the retina.
- keep one's distance — the extent or amount of space between two things, points, lines, etc.
- keep up appearances — If you keep up appearances, you try to behave and dress in a way that people expect of you, even if you can no longer afford it.
- kellogg-briand pact — a treaty renouncing war as an instrument of national policy and urging peaceful means for the settlement of international disputes, originally signed in 1928 by 15 nations, later joined by 49 others.
- kirlian photography — a photographic process that supposedly records electrical discharges naturally emanating from living objects, producing an auralike glow surrounding the object on a photographic plate or film with which the object is in direct contact.
- knights hospitalers — a member of the religious and military order (Knights Hospitalers or Knights of St. John of Jerusalem) originating about the time of the first Crusade (1096–99) and taking its name from a hospital at Jerusalem.
- lakshadweep islands — a group of 26 coral islands and reefs in the Arabian Sea, off the SW coast of India: a union territory of India since 1956. Administrative centre: Kavaratti Island. Pop: 60 595 (2001). Area: 28 sq km (11 sq miles)
- land of opportunity — Arkansas (used as a nickname).
- landscape architect — A landscape architect is the same as a landscape gardener.
- landscape gardening — the art or trade of designing or rearranging large gardens, estates, etc.
- late-night shopping — later opening hours of shops than usual, esp as a regular occurrence on a particular night of the week
- league championship — the competition to become league champions
- leave the door open — a movable, usually solid, barrier for opening and closing an entranceway, cupboard, cabinet, or the like, commonly turning on hinges or sliding in grooves.
- leisure occupations — activities which you enjoy and which you perform in your free time
- leukoencephalopathy — (medicine) Any disease that effects the white matter of the brain.
- level playing field — a state of equality; an equal opportunity.
- liaodong pensinsula — a peninsula of NE China, in S Manchuria extending south into the Yellow Sea: forms the S part of Liaoning province
- limited partnership — a partnership formed by at least one general partner and at least one special partner.
- line-of-battle ship — ship of the line.
- linear independence — (in linear algebra) the property of a set of elements in a vector space in which none of the vectors can be written as a linear combination of the others.
- linear polarization — polarization of light in which the vibrations are confined to a single plane, that of the wave front.
- load-bearing printf — (programming, humour) The kind of bug present in a program which works correctly when producing debug output but fails when the debugging is turned off. The expression combines load-bearing wall and printf as used in debugging by printf.
- longitudinal parity — (storage, communications) An extra byte (or word) appended to a block of data in order to reveal corruption of the data. Bit n of this byte indicates whether there was an even or odd number of "1" bits in bit position n of the bytes in the block. The parity byte is computed by XORing the data bytes in the block. Longitudinal parity allows single bit errors to be detected.
- look sb up and down — If someone looks you up and down, they direct their eyes from your head to your feet, in a rude and superior way and often as though they disapprove of you.
- lymphoproliferation — (medicine) the excessive production of lymphocytes.
- magnetic north pole — the point on Earth to where a compass needle points, and which is situated near the geographic North Pole. However, with time, the exact location can vary.
- magnetic tape drive — (storage) (Or "tape drive") A peripheral device that reads and writes magnetic tape.
- main-topgallantmast — the mast next above the main-topmast.