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16-letter words containing p, a, d, y

  • hairy woodpecker — a North American woodpecker, Picoides villosus, resembling but larger than the downy woodpecker.
  • heads-up display — an electronic display of data from instruments or other sources projected at eye level so that a driver or pilot sees it without looking away from the road or course. Abbreviation: HUD.
  • hybrid perpetual — a type of cultivated rose bred from varieties having vigorous growth and more or less recurrent bloom.
  • hydnocarpic acid — an acid, C 16 H 28 O 2 , obtained from chaulmoogra oil, and used in the treatment of leprosy.
  • hydrophyllaceous — belonging to the Hydrophyllaceae, the waterleaf family of plants.
  • hyperandrogenism — (medicine) An abnormally high production of androgens.
  • hyperchlorhydria — excessive secretion of hydrochloric acid in the stomach.
  • hyperlipoidaemia — Alt form hyperlipoidemia.
  • hypoaeolian mode — a plagal church mode represented on the white keys of a keyboard instrument by an ascending scale from E to E, with the final on A.
  • hyponitrous acid — an unstable, crystalline acid, H 2 N 2 O 2 .
  • implied warranty — a warranty not stated explicitly by the seller of merchandise or real property but presumed for reasons of commercial or legal custom (distinguished from express warranty).
  • independence day — July 4, a U.S. holiday commemorating the adoption of the Declaration of Independence on July 4, 1776.
  • indirect primary — a primary in which members of a party elect delegates to a party convention that in turn elects the party's candidates.
  • indispensability — absolutely necessary, essential, or requisite: an indispensable member of the staff.
  • lady of pleasure — a prostitute.
  • laserdisc player — a device that plays laserdiscs
  • lord proprietary — (in Colonial America) an owner, governor, or grantee of a proprietary colony
  • many-plumed moth — a moth of the species, Alucita hexadactyla
  • paradigmatically — of or relating to a paradigm.
  • paraformaldehyde — a white, crystalline polymer of formaldehyde, (HCOH) n , from which it is obtained by evaporation of the aqueous solution: used chiefly as an antiseptic.
  • parts of lindsey — an area in E England constituting a former administrative division of Lincolnshire
  • pays de la loire — a region of W France, on the Bay of Biscay: generally low-lying, drained by the River Loire and its tributaries; agricultural
  • peegee hydrangea — a widely cultivated hydrangea, Hydrangea paniculata grandiflora, having pyramidal clusters of persistent flowers that are white on opening and turn pinkish as they mature.
  • periodic tenancy — the letting of a dwelling for a repeated short term, as by the week, month, or quarter, with no end date
  • perpendicularity — vertical; straight up and down; upright.
  • phagocytic index — the average number of bacteria ingested per phagocyte in an incubated mixture of bacteria, phagocytes, and blood serum: used in determining the opsonic index.
  • pharmacodynamics — the branch of pharmacology dealing with the course of action, effect, and breakdown of drugs within the body.
  • physical address — (memory management)   The address presented to a computer's main memory in a virtual memory system, in contrast to the virtual address which is the address generated by the CPU. A memory management unit translates virtual addresses into physical addresses.
  • phytoremediation — a process of decontaminating soil or water by using plants and trees to absorb or break down pollutants.
  • pinot chardonnay — Chardonnay.
  • play a lone hand — to operate without assistance
  • play one's cards — to carry out one's plans; take action (esp in the phrase play one's cards right)
  • polyacrylic acid — a polymer of acrylic acid used as a sizing agent in the manufacture of nylon and other synthetic textiles.
  • polycondensation — formation of a polymer by chemical condensation with the elimination of a small molecule, such as water.
  • polyhedral angle — a configuration consisting of the lateral faces of a polyhedron around one of its vertices. The portion of a pyramid including one of its points is such a configuration.
  • primary deviance — the violation of a norm or rule that does not result in the violator's being stigmatized as deviant.
  • primary industry — an industry, as agriculture, forestry, or fishing, that deals in obtaining natural materials.
  • primary producer — any green plant or any of various microorganisms that can convert light energy or chemical energy into organic matter.
  • pseudoparenchyma — (in certain fungi and red algae) a compact mass of tissue, made up of interwoven hyphae or filaments, that superficially resembles plant tissue.
  • psychic distance — the degree of emotional detachment maintained toward a person, group of people, event, etc.
  • pyramidal orchid — a chalk-loving orchid, Anacamptis pyramidalis, bearing a dense cone-shaped spike of purplish-pink flowers with a long curved spur
  • pyroracemic acid — pyruvic acid.
  • pyrovanadic acid — an oxyacid of vanadium, known chiefly in the form of its vanadate salts; Formula: H4V2O7
  • pyruvic aldehyde — a yellow, liquid compound, C 3 H 4 O 2 , containing both an aldehyde and a ketone group, usually obtained in a polymeric form: used chiefly in organic synthesis.
  • radial paralysis — paralysis of a forelimb as a result of loss of function of the radial nerve, usually following traumatic injury
  • radiographically — the production of radiographs.
  • ramsden eyepiece — an eyepiece consisting of two plano-convex crown-glass lenses of equal focal length, placed with the convex sides facing each other and with a separation between the lenses of about two-thirds of the focal length of each.
  • refinery upgrade — A refinery upgrade is the process of introducing the newest technology in some parts of the refinery.
  • sapodilla family — the plant family Sapotaceae, characterized by chiefly tropical trees and shrubs having milky juice, simple leaves, small flowers, and fruit in the form of a berry, and including the buckthorn (genus Bumelia), sapodilla, star apple, and trees that are the source of gutta-percha and balata.
  • secondary phloem — phloem derived from the cambium during secondary growth.
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