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15-letter words containing p, h

  • permanent tooth — any of the 32 adult teeth that replace the 20 milk teeth.
  • peroxysulphuric — as in peroxysulphuric acid
  • perpetual check — a continuing series of checks resulting in a drawn game because they cannot be halted or evaded without resulting in checkmate or a serious disadvantage.
  • personal growth — development as an individual
  • peter the great — ("the Great") 1672–1725, czar of Russia 1682–1725.
  • petroleum ether — a volatile mixture of the higher alkane hydrocarbons, obtained as a fraction of petroleum and used as a solvent
  • phantom circuit — a circuit derived from two suitably arranged pairs of wires, each pair being a circuit (side circuit) and also acting as one half of an additional derived circuit, the entire system providing the capabilities of three circuits while requiring wires for only two.
  • pharmacological — the science dealing with the preparation, uses, and especially the effects of drugs.
  • pharmacotherapy — the treatment of disease through the administration of drugs.
  • phase-switching — a technique used in radio interferometry in which the signal from one of the two antennae is periodically reversed in phase before being multiplied by the signal from the other antenna
  • pheasant coucal — a brown and black, red-eyed Australian bird, Centropus phasianinus, with a pheasantlike tail.
  • phenakistoscope — an early form of a zoetrope in which figures are depicted in different poses around the edge of a disc. When the disc is spun, and the figures observed through the apertures around the edge of the disc, they appear to be moving
  • phenazopyridine — a substance, C 1 1 H 1 2 ClN 5 , used as a lower urinary tract analgesic.
  • phenolphthalein — a white, crystalline compound, C 2 0 H 1 4 O 4 , used as an indicator in acid-base titration and as a laxative.
  • phenomenalistic — the doctrine that phenomena are the only objects of knowledge or the only form of reality.
  • phenomenologies — the study of phenomena.
  • phenomenologist — the study of phenomena.
  • phenyl valerate — a colorless, slightly water-soluble liquid, C 1 1 H 1 4 O 2 , used chiefly in flavoring and perfumery.
  • phenylene group — any of three bivalent, isomeric groups having the formula –C 6 H 4 –, derived from benzene by the removal of two hydrogen atoms.
  • phenylhydrazine — a yellow, poisonous liquid or low-melting solid, C 6 H 8 N 2 , used in chemical analysis and organic synthesis.
  • phenylketonuria — an inherited disease due to faulty metabolism of phenylalanine, characterized by phenylketones in the urine and usually first noted by signs of mental retardation in infancy.
  • phenylketonuric — an inherited disease due to faulty metabolism of phenylalanine, characterized by phenylketones in the urine and usually first noted by signs of mental retardation in infancy.
  • philanthropical — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.
  • philip the bold — 1342–1404, duke of Burgundy (1363–1404), noted for his courage at Poitiers (1356) in the Hundred Years' War: regent of France for his nephew Charles VI (1368–88, 1392–1404)
  • philip the good — 1396–1467, duke of Burgundy 1419–67.
  • philosophically — of or relating to philosophy: philosophical studies.
  • phlebosclerosis — sclerosis, or hardening, of the walls of veins.
  • phloem necrosis — a disease of the American elm caused by a mycoplasmalike organism, characterized by yellowing and necrosis of the foliage and yellowish-brown discoloration of the phloem.
  • phoenix islands — a group of eight coral islands in the central Pacific: administratively part of Kiribati. Area: 28 sq km (11 sq miles). The islands and surrounding waters form the Phoenix Islands Protected Area, the world's largest marine protected area. Area: 410 500 sq km (158 500 sq miles)
  • phonautographic — relating to a phonautograph or a piece of equipment that records sound visually by detecting the sound waves and indicating them on a graph
  • phonemicization — a grouping of phonemes
  • phoneticization — the representation of speech in writing using a system in which individual symbols reflect speech sounds in a regular manner
  • phonocardiogram — the graphic record produced by a phonocardiograph.
  • phonogramically — in a phonogramic manner
  • phosphate group — the group or radical obtained by removal of one or more hydrogen atoms from phosphoric acid.
  • phosphocreatine — a compound, C 4 H 1 0 O 5 N 3 P, found chiefly in muscle, formed by the enzymatic interaction of an organic phosphate and creatine, the breakdown of which provides energy for muscle contraction.
  • phosphor bronze — a bronze, composed of about 80 percent copper, 10 percent tin, 9 percent antimony, and 1 percent phosphorus, having great hardness and resistance to corrosion.
  • phosphorescence — the property of being luminous at temperatures below incandescence, as from slow oxidation in the case of phosphorus or after exposure to light or other radiation.
  • phosphoric acid — any of three acids, orthophosphoric acid, H 3 PO 4 , metaphosphoric acid, HPO 3 , or pyrophosphoric acid, H 4 P 2 O 7 , derived from phosphorus pentoxide, P 2 O 5 , and various amounts of water.
  • phosphorylation — to introduce the phosphoryl group into (an organic compound).
  • phosphorylative — of or relating to phosphorylation
  • photo-secession — an association of photographers founded in New York City in 1902 by Alfred Stieglitz and Edward Steichen that advocated the development and public recognition of photography as a fine art.
  • photoactivation — the activation or control of a chemical, chemical reaction, or organism by light, as the activation of chlorophyll by sunlight during photosynthesis.
  • photoconducting — of or relating to photoconduction
  • photoconduction — of, relating to, or exhibiting photoconductivity.
  • photoconductive — of, relating to, or exhibiting photoconductivity.
  • photodegradable — (of a substance) capable of being broken down by light.
  • photodissociate — to split or break up molecules as a result of the absorption of photons
  • 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
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