15-letter words containing a, g, r, y
- new archaeology — a reorientation of archaeology, dating from the 1960s, that emphasizes an explicitly scientific, problem-oriented, deductive approach to research.
- ocean greyhound — a fast ship, esp a liner
- oligohydramnios — (medicine) A deficit of amniotic fluid in the amniotic sac, causing distinctive deformations of the foetus.
- operating cycle — the period of time between starting a business and making a profit
- orangeman's day — the 12th of July, celebrated by Protestants in Northern Ireland to commemorate the anniversary of the Battle of the Boyne (1690)
- orangemen's day — July 12, an annual celebration in Northern Ireland and certain cities having a large Irish section, especially Liverpool, to mark both the victory of William III over James II at the Battle of the Boyne, July 1, 1690, and the Battle of Augbrim, July 12, 1690.
- ordinary degree — a university degree without honours
- ordinary rating — a rank in the Royal Navy comparable to that of a private in the army
- ortega y gasset — José [haw-se] /hɔˈsɛ/ (Show IPA), 1883–1955, Spanish philosopher, journalist, and critic.
- orthokeratology — a technique for correcting refractive errors in vision by changing the shape of the cornea with the temporary use of progressively flatter hard contact lenses.
- palaeogeography — the study of geographical features of the geological past
- palaeontography — the branch of palaeontology concerned with the description of fossils
- passenger ferry — a ferry that carries passengers
- phonogramically — in a phonogramic manner
- phototelegraphy — facsimile (def 2a).
- phototopography — topographical surveying employing photogrammetric methods.
- 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
- phrenologically — in a manner relating to phrenology
- picture gallery — place where art is exhibited and sold
- pituitary gland — a small, somewhat cherry-shaped double structure attached by a stalk to the base of the brain and constituting the master endocrine gland affecting all hormonal functions in the body, consisting of an anterior region ((anterior pituitary) or (adenohypophysis)) that develops embryonically from the roof of the mouth and that secretes growth hormone, LH, FSH, ACTH, TSH, and MSH, a posterior region ((posterior pituitary) or (neurohypophysis)) that develops from the back of the forebrain and that secretes the hormones vasopressin and oxytocin, and an intermediate part (pars intermedia) derived from the anterior region but joined to the posterior region, that secretes the hormone MSH in lower vertebrates.
- plane surveying — the surveying of areas of limited size, making no corrections for the earth's curvature
- plastic surgery — the branch of surgery dealing with the repair or replacement of malformed, injured, or lost organs or tissues of the body, chiefly by the transplant of living tissues.
- plethysmography — the tracking of changes measured in bodily volume
- polynomial ring — the set of all polynomials in an indeterminate variable with coefficients that are elements of a given ring.
- polysomnography — a record of a person's sleep pattern, breathing, heart activity, and limb movements during sleep. Abbreviation: PSG.
- poultry farming — breeding and keeping fowl
- primary sealing — Primary sealing is devices used for sealing tanks, to reduce emissions, often made of foam.
- primary storage — main memory
- primary winding — an induction coil that is the part of an electric circuit in which a changing current induces a current in a neighbouring circuit
- programmability — capable of being programmed.
- pseudopregnancy — Pathology, Veterinary Pathology. false pregnancy.
- psychobiography — a biographical study focusing on psychological factors, as childhood traumas and unconscious motives.
- psychogeriatric — the psychology of old age.
- psychographical — relating to psychographics
- pyramid selling — Pyramid selling is a method of selling in which one person buys a supply of a particular product direct from the manufacturer and then sells it to a number of other people at an increased price. These people sell it on to others in a similar way, but eventually the final buyers are only able to sell the product for less than they paid for it.
- pyrogallic acid — pyrogallol
- pyrogallic-acid — 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.
- pyrophotography — the production of pyrophotographs
- quantum gravity — a theory of the gravitational interaction that involves quantum mechanics to explain the force
- radioautography — autoradiography.
- radiogoniometry — the science of detecting the direction of radio waves
- radioimmunology — the study of biological substances or processes with the aid of antigens or antibodies labeled with a radioactive isotope.
- radiotechnology — the technical application of any form of radiation to industry.
- radiotelegraphy — the constructing or operating of radiotelegraphs.
- range paralysis — Marek's disease.
- reality testing — the objective evaluation of situations, defective in certain psychoses, that enable one to distinguish between the external and the internal worlds and between the self and the nonself.
- rechargeability — (of a storage battery) capable of being charged repeatedly. Compare cordless (def 2).
- recognizability — to identify as something or someone previously seen, known, etc.: He had changed so much that one could scarcely recognize him.
- recycling plant — a factory for processing used or abandoned materials