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10-letter words containing p, y, o, r

  • protectory — an institution for the care of destitute or delinquent children.
  • protensity — the actuality of duration
  • proteolyse — to cause to undergo proteolysis
  • protervity — petulance
  • protonymph — the newly hatched form of various mites
  • protophyte — a single-celled plant of the class Protophyta
  • prototyper — An interface builder for the Macintosh from Smethers Barnes.
  • prototypic — the original or model on which something is based or formed.
  • protoxylem — the part of the primary xylem that develops first, consisting of narrow, thin-walled cells.
  • prowlingly — in the manner of a prowl
  • proximally — situated toward the point of origin or attachment, as of a limb or bone. Compare distal (def 1).
  • proxy vote — a vote cast by a person's representative
  • psychogram — a message believed to be written by a spirit or authored by psychical means
  • pterylosis — the arrangement of feathers on a bird
  • pyatigorsk — a city in the SW Russian Federation in Europe, in Caucasia.
  • pycnometer — a container used for determining the density of a liquid or powder, having a specific volume and often provided with a thermometer to indicate the temperature of the contained substance.
  • pyramidion — a miniature pyramid, as at the apex of an obelisk.
  • pyranoside — a glycoside containing a pyran ring structure.
  • pyrazoline — any of the group of heterocyclic compounds containing three carbon atoms, two adjacent nitrogen atoms, and one double bond in the ring.
  • pyrazolone — any of the group of heterocyclic compounds containing the pyrazoline ring in which one carbon atom is doubly linked to an oxygen atom not in the ring.
  • pyrenocarp — Mycology. a perithecium.
  • pyrethroid — any of several synthetic compounds that are similar to but more persistent than natural pyrethrins.
  • pyretology — a discourse on fevers
  • pyridoxine — a derivative of pyridine, C 8 H 1 1 NO 3 , occurring in whole-grain cereals, meats, fish, etc., and also made synthetically: required for the prevention of pellagra and the formation of hemoglobin; vitamin B 6 .
  • pyroborate — borax1 .
  • pyrochlore — a mineral, chiefly composed of niobates of the cerium metals, occurring in syenites in the form of brown crystals.
  • pyrogallol — a white, crystalline, water-soluble, poisonous, solid, phenolic compound, C 6 H 3 (OH) 3 , obtained by heating gallic acid and water: used chiefly as a developer in photography, as a mordant for wool, in dyeing, and in medicine in the treatment of certain skin conditions.
  • pyrogenous — pyrogenic (def 2).
  • pyrography — the process of burning designs on wood, leather, etc., with a heated tool.
  • pyrolusite — a common mineral, manganese dioxide, MnO 2 , the principal ore of manganese, used in various manufactures, as a decolorizer of brown or green tints in glass, and as a depolarizer in dry-cell batteries.
  • pyrolysate — a product of pyrolysis
  • pyromaniac — a compulsion to set things on fire.
  • pyromantic — divination by fire, or by forms appearing in fire.
  • pyromeride — a devitrified form of rhyolite, having a nodular appearance and spherulitic texture
  • pyrophobia — an abnormal fear of fire.
  • pyrophobic — an abnormal fear of fire.
  • pyrophoric — capable of igniting spontaneously in air.
  • pyrophorus — a substance which ignites when exposed to air
  • pyrotechny — the art of making fireworks
  • pyroxenite — any rock composed essentially, or in large part, of pyroxene of any kind.
  • pyroxenoid — any of a group of triclinic silicates including wollastonite, rhodonite, and pectolite
  • pyrrhonism — the Skeptic doctrines of Pyrrho and his followers.
  • pyrrhotite — a common mineral, iron sulfide, approximately FeS but variable because of a partial absence of ferrous ions, occurring in massive and in crystal forms with a bronze color and metallic luster; magnetic pyrites: generally slightly magnetic.
  • pyrrophyta — a phylum in the kingdom Protista comprising the dinoflagellates and cryptomonads.
  • pyrrophyte — any of various single-celled, biflagellated algae, of the phylum Pyrrophyta, especially the dinoflagellates.
  • pythagoras — c582–c500 b.c, Greek philosopher, mathematician, and religious reformer.
  • qwertyuiop — Filler text.
  • radio play — a play written for broadcasting on radio
  • radioscopy — the examination of objects opaque to light by means of another form of radiation, usually x-rays.
  • redemptory — of or relating to redemption; redemptive.
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