15-letter words containing a, p, r, e, l, i
- deprovincialize — to make provincial in character.
- dermatoglyphics — the lines forming a skin pattern, esp on the palms of the hands and soles of the feet
- diaheliotropism — the tendency among plants to respond to the light of the sun by orienting their leaves perpendicular to the sun's rays, such that the upper surface of the leaves receives maximum light
- disreputability — The state of being disreputable.
- edriophthalmian — edriophthalmous
- edriophthalmous — (of certain crustaceans) having stalkless eyes
- egyptian clover — a Mediterranean clover, Trifolium alexandrinum, grown as a forage crop and to improve the soil in the southwestern US and the Nile valley
- eleutherophobia — the fear of freedom
- english sparrow — a small Eurasian weaverbird, Passer domesticus, now established in North America and Australia. It has a brown streaked plumage with grey underparts
- english speaker — a person who speaks English as a first, or second mother tongue
- engraving plate — a metal, usually steel, plate on which an image is engraved in order to be reproduced
- entrepreneurial — Characterized by the taking of financial risks in the hope of profit; enterprising.
- epeirogenically — in the manner of epeirogeny
- epicyclic train — a cluster of gears consisting of a central gearwheel with external teeth (the sun), a coaxial gearwheel of greater diameter with internal teeth (the annulus), and one or more planetary gears engaging with both of them to provide a large gear ratio in a compact space
- epsilon squared — (jargon) A quantity even smaller than epsilon, as small in comparison to epsilon as epsilon is to something normal; completely negligible. If you buy a supercomputer for a million dollars, the cost of the thousand-dollar terminal to go with it is epsilon, and the cost of the ten-dollar cable to connect them is epsilon squared. Compare lost in the underflow, lost in the noise.
- evaporated milk — concentrated dairy product
- experientialism — (philosophy) The theory that experience is the source of knowledge.
- experientialist — A proponent of experientialism.
- experimentalism — An experimental practice or tendency, especially in the arts.
- experimentalist — One who performs experiments.
- experimentalize — (transitive) To make experiments upon.
- external spline — any one of a series of narrow keys formed longitudinally around the circumference of a shaft that fit into corresponding grooves (internal splines) in a mating part: used to prevent movement between two parts, esp in transmitting torque
- facile princeps — an obvious leader
- fair employment — the policy or practice of employing people on the basis of their capabilities only, without regard to race, color, religion, sex, national origin, age, or disability.
- family practice — medical specialization in general practice, requiring training beyond that of general practice and leading to board certification.
- fillister plane — an adjustable plane for cutting rabbets, grooves, etc
- finger alphabet — a series of shapes made by the fingers that indicate letters of an alphabet and can be used in fingerspelling for the deaf
- flapping router — (networking) A router that transmits routing updates alternately advertising a destination network first via one route, then via a different route. Flapping routers are identified on more advanced protocol analysers such as the Network General (TM) Sniffer.
- flowering maple — any of various shrubs belonging to the genus Abutilon, of the mallow family, having large, bright-colored flowers.
- flowering plant — a plant that produces flowers, fruit, and seeds; angiosperm.
- fool's paradise — a state of enjoyment based on false beliefs or hopes; a state of illusory happiness.
- franklin pierce — Franklin, 1804–69, 14th president of the U.S. 1853–57.
- free soil party — a former U.S. political party (1848–56) that opposed the extension of slavery in the Territories not yet admitted to statehood.
- fusospirochetal — Relating to fusospirochetes.
- general paresis — a syphilitic brain disorder characterized by chronic inflammation and degeneration of cerebral tissue resulting in mental and physical deterioration.
- geostrophically — By means of, or in terms of, geostrophy.
- gila woodpecker — a dull-colored woodpecker, Melanerpes uropygialis, of the southwestern U.S. and Mexico.
- glazier's point — a small, pointed piece of sheet metal, for holding a pane of glass in a sash until the putty has hardened.
- golden samphire — a Eurasian coastal plant, Inula crithmoides, with fleshy leaves and yellow flower heads: family Asteraceae (composites)
- grecian profile — a profile distinguished by the absence of the hollow between the upper ridge of the nose and the forehead, thereby forming a straight line.
- greenfield park — a town in S Quebec, in E Canada, near Montreal.
- guadalupe river — a river in SE Texas, flowing SE to the San Antonio River. 250 miles (402 km) long.
- guerrilla group — an organized group of guerrillas
- hair specialist — an expert in the treatment and care of human hair
- halting problem — The problem of determining in advance whether a particular program or algorithm will terminate or run forever. The halting problem is the canonical example of a provably unsolvable problem. Obviously any attempt to answer the question by actually executing the algorithm or simulating each step of its execution will only give an answer if the algorithm under consideration does terminate, otherwise the algorithm attempting to answer the question will itself run forever. Some special cases of the halting problem are partially solvable given sufficient resources. For example, if it is possible to record the complete state of the execution of the algorithm at each step and the current state is ever identical to some previous state then the algorithm is in a loop. This might require an arbitrary amount of storage however. Alternatively, if there are at most N possible different states then the algorithm can run for at most N steps without looping. A program analysis called termination analysis attempts to answer this question for limited kinds of input algorithm.
- hardship clause — a clause in a contract which covers unforeseen events that would make it more difficult for one party to complete the contract, and in which case offers alternative terms
- hardy perennial — a plant that lasts three seasons or more and that can withstand freezing temperatures
- herpes labialis — oral herpes.
- hip replacement — a surgical procedure involving replacing the hip joint with an artificial implant
- holding pattern — a traffic pattern for aircraft at a specified location (holding point) where they are ordered to remain until permitted to land or proceed.