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15-letter words containing t, o, h, r

  • 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.
  • photoproduction — the light-induced production of a species of molecule such as a radical or ion
  • photorefractive — of or relating to a change in the index of refraction by spatial variations of the light intensity, as in a laser.
  • photosensitizer — a drug, food, or other chemical that increases sensitivity to light and other visible photons
  • phototelegraphy — facsimile (def 2a).
  • phototopography — topographical surveying employing photogrammetric methods.
  • phototransistor — a transistor that amplifies current induced by photoconductivity.
  • phototropically — in a phototropic manner
  • phototypesetter — a machine for phototypesetting
  • phototypography — (formerly) the art or technique of making printing surfaces by light or photography, by any of a large number of processes.
  • photoxylography — the process of using photography in order to produce an image on wood, for the use of a wood engraver
  • physiotherapist — physical therapy.
  • pink-shirt book — (publication)   "The Peter Norton Programmer's Guide to the IBM PC". The original cover featured a picture of Peter Norton with a silly smirk on his face, wearing a pink shirt. Perhaps in recognition of this usage, the current edition has a different picture of Norton wearing a pink shirt. See also book titles.
  • pinochet ugarte — Augusto [ou-goos-taw] /aʊˈgus tɔ/ (Show IPA), 1915–2006, Chilean army general and political leader: president 1973–90.
  • pistachio green — a light or medium shade of yellow green.
  • pithecanthropus — a former genus of extinct hominids whose members have now been assigned to the proposed species Homo erectus.
  • plethysmography — the tracking of changes measured in bodily volume
  • pneumatotherapy — the use of compressed or rarefied air in treating disease.
  • poikilothermism — the state or quality of being cold-blooded, as fishes and reptiles.
  • point of honour — a circumstance, event, etc, that involves the defence of one's principles, social honour, etc
  • polychlorinated — having multiple chlorine atoms
  • pontine marshes — an area of W Italy, southeast of Rome: formerly malarial swamps, drained in 1932–34 after numerous attempts since 160 bc had failed
  • port washington — a town on NW Long Island, in SE New York.
  • posthemorrhagic — occurring after a haemorrhage
  • posthole digger — a tool or device for digging a posthole.
  • postsynchronize — to add sound, such as dubbing, to a film or video after shooting is completed
  • potash feldspar — any of the feldspar minerals having the composition KAlSi 3 O 8 , as orthoclase.
  • power macintosh — Power Mac
  • probationership — the position of a probationer
  • process heating — Process heating is heating, usually from steam, which is used to increase the temperature in a process vessel.
  • propeller shaft — a shaft that transmits power from an engine to a propeller.
  • property rights — a legal right to or in a particular property.
  • protonephridium — a tubular, excretory structure in certain invertebrates, as flatworms, rotifers, and some larvae, usually ending internally in flame cells and having an external pore
  • protospatharius — (of the Byzantine empire) a high-ranking official in the imperial guard
  • provost marshal — Army. an officer on the staff of a commander, charged with the maintaining of order and with other police functions within a command.
  • pseudoarthrosis — a joint formed by fibrous tissue bridging the gap between the two fragments of bone of an old fracture that have not united
  • pseudonephritis — a condition, thought to be benign, in which microscopic amounts of blood and protein are present in the urine, occurring commonly among athletes after strenuous exercise.
  • psychochemistry — the treatment of mental illnesses by drugs
  • psychogeriatric — the psychology of old age.
  • psychohistorian — a person who writes psychohistory
  • psychotherapist — the treatment of psychological disorders or maladjustments by a professional technique, as psychoanalysis, group therapy, or behavioral therapy.
  • puerto ayacucho — a city in S Venezuela, on the Orinoco River.
  • pulchritudinous — physically beautiful; comely.
  • pulmobranchiate — possessing a pulmobranch
  • put on the ritz — ostentatious or pretentious display.
  • pyrophotography — the production of pyrophotographs
  • pyrotechnically — in a pyrotechnical manner
  • pyrrhic victory — a victory or goal achieved at too great a cost.
  • quantity theory — a theory stating that the general price level varies directly with the quantity of money in circulation and the velocity with which it is circulated, and inversely with the volume of production expressed by the total number of money transactions
  • quasihistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
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