15-letter words containing p, e, l, t, o
- photoelasticity — the phenomenon of double refraction of polarized light by a transparent substance under elastic stress, used to measure strain in elastic, transparent materials.
- photoelectronic — relating to electronic effects or devices affected by light
- photoheliograph — an instrument for photographing the sun, consisting of a camera and a specially adapted telescope.
- photomechanical — noting or pertaining to any of various processes for printing from plates or surfaces prepared by the aid of photography.
- photomultiplier — an extremely sensitive detector of light and of other radiation, consisting of a tube in which the electrons released by radiation striking a photocathode are accelerated, greatly amplifying the signal obtainable from small quantities of radiation.
- phototelegraphy — facsimile (def 2a).
- phototheodolite — an optical tracking instrument consisting of a camera and theodolite mounted on a single tripod, used in photogrammetry and in tracking rockets.
- phytochemically — in a phytochemical manner
- phytoflagellate — any microscopic flagellate that is photosynthetic.
- pierrot lunaire — a cycle of 21 songs (1912) for voice and instruments, by Arnold Schönberg, written in Sprechgesang style and set to poems of Albert Giraud in German translation.
- pinkster flower — a wild azalea, Rhododendron periclymenoides, of the U.S., having pink or purplish flowers.
- plain chocolate — dark eating chocolate
- plainclothesman — a police officer, especially a detective, who wears ordinary civilian clothes while on duty.
- plantaginaceous — relating to or belonging to the family Plantaginaceae
- plastic surgeon — doctor who performs cosmetic surgery
- plate tectonics — a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past adjacent plates.
- platform rocker — a rocking chair supported on a stationary base
- platform scales — a weighing machine which has a platform that you put something on to be weighed
- platform tennis — a variation of tennis played on a wooden platform enclosed with chicken wire in which the players hit a rubber ball with wooden paddles following the same basic rules as tennis except that only one serve is permitted and balls can be played off the back and side fences.
- platform ticket — a pass allowing a visitor to enter upon a railroad platform from which those not traveling are ordinarily excluded.
- platinum blonde — a person, especially a girl or woman, whose hair is of a pale blond or silver color, usually colored artificially by bleaching or dyeing.
- play favourites — to display favouritism
- plenipotentiary — a person, especially a diplomatic agent, invested with full power or authority to transact business on behalf of another.
- plethysmography — the tracking of changes measured in bodily volume
- plug compatible — of or relating to computers or peripheral devices that are functionally equivalent to, and may be substituted for, other models.
- plug-compatible — of or relating to computers or peripheral devices that are functionally equivalent to, and may be substituted for, other models.
- plunket society — the Royal New Zealand Society for the Health of Women and Children
- poikilothermism — the state or quality of being cold-blooded, as fishes and reptiles.
- point d'alencon — Alençon lace (def 1).
- poke mullock at — to ridicule
- police reporter — a news reporter assigned to cover a police department for newsworthy events.
- polycarboxylate — a salt or ester of a polycarboxylic acid. Polycarboxylate esters are used in certain detergents
- polychlorinated — having multiple chlorine atoms
- polycrystalline — (of a rock or metal) composed of aggregates of individual crystals.
- polyelectrolyte — an electrolyte of high molecular weight, usually polymeric, either natural or synthetic.
- polyisobutylene — a polymer of isobutylene, used chiefly in the manufacture of synthetic rubber.
- polynomial-time — (complexity) (P) The set or property of problems which can be solved by a known polynomial-time algorithm.
- polyphemus moth — a large, yellowish-brown American silkworm moth, Antheraea polyphemus, having a prominent eyespot on each hind wing and feeding on cherry, apple, and other trees.
- polyunsaturated — of or noting a class of animal or vegetable fats, especially plant oils, whose molecules consist of carbon chains with many double bonds unsaturated by hydrogen atoms and that are associated with a low cholesterol content of the blood.
- popeye catalufa — See under catalufa.
- popular culture — cultural activities or commercial products reflecting, suited to, or aimed at the tastes of the general masses of people.
- portable pixmap — (file format) (PPM) A colour image file format. A PPM file contains the following: a two character "{magic number}" - "P3", the width in pixels, the height in pixels, the maximum colour component value, HEIGHT rows of WIDTH {pixels}. The rows are ordered from top to bottom with the pixels in each row ordered from left to right. Each pixel is represented as three values for red, green, and blue. All parts are separated by whitespace and numbers are in decimal ASCIII representation. A zero pixel component means that colour is absent. Characters from a "#" to the next end-of-line are ignored and no line should be longer than 70 characters. Here is an example of a small pixmap in this format: P3 # feep.ppm 4 4 15 0 0 0 0 0 0 0 0 0 15 0 15 0 0 0 0 15 7 0 0 0 0 0 0 0 0 0 0 0 0 0 15 7 0 0 0 15 0 15 0 0 0 0 0 0 0 0 0 A "RAWBITS" variant has magic number "P6", pixel values are stored as plain binary bytes, instead of ASCII decimal and no whitespace is allowed after a single whitespace character after the maximum colour component value which must be less than or equal to 255.
- portland cement — a type of hydraulic cement usually made by burning a mixture of limestone and clay in a kiln.
- portugal laurel — Prunus lusitanica; type of cherry
- positive column — the luminous region between the Faraday dark space and the anode glow in a vacuum tube, occurring when the pressure is low.
- post-apoplectic — of or relating to apoplexy or stroke.
- post-collegiate — of or relating to a college: collegiate life.
- post-liberation — the act of liberating or the state of being liberated.
- post-millennial — of or relating to the period following the millennium.
- post-revolution — an overthrow or repudiation and the thorough replacement of an established government or political system by the people governed.