15-letter words containing d, y, o
- psychodiagnosis — a psychological examination using psychodiagnostic techniques.
- psyllid yellows — a viral disease transmitted by the potato psyllid, causing the young leaves of potatoes, tomatoes, eggplants, and peppers to curl and turn yellow or purplish.
- pubic directory — [NYU] (also "pube directory" /pyoob' d*-rek't*-ree/) The "pub" (public) directory on a machine that allows FTP access. So called because it is the default location for SEX (software exchange).
- pycnodysostosis — a disorder characterized by fragile bones
- 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.
- pyrometric bead — (in a kiln) a ball of material that indicates by changing color that a certain temperature has been reached.
- qwerty keyboard — a keyboard having the arrangement of alphabetical and numerical keys found on the traditional typewriter
- radar astronomy — the branch of astronomy that uses radar to map the surfaces of planetary bodies, as the moon and Venus, and to determine periods of rotation.
- radial velocity — the component of the motion of a star away from or toward the earth along its line of sight, expressed in miles or kilometers per second and determined by the shift in the wavelength of light emitted by the star.
- radio astronomy — the branch of astronomy that utilizes extraterrestrial radiation in radio wavelengths rather than visible light for the study of the universe.
- radio frequency — the frequency of the transmitting waves of a given radio message or broadcast.
- radio sono-buoy — a buoy equipped to detect underwater noises and transmit them by radio
- radioautography — autoradiography.
- radiochemically — by radiochemical means or methods; from a radiochemical perspective
- 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.
- radiometrically — using a radiometric method, in terms of radiometry
- radiotechnology — the technical application of any form of radiation to industry.
- radiotelegraphy — the constructing or operating of radiotelegraphs.
- rayside-balfour — a town in S Ontario, in S Canada.
- reproducibility — to make a copy, representation, duplicate, or close imitation of: to reproduce a picture.
- reserved memory — (storage) The address range 640-1024 kilobytes on an IBM PC, reserved for BIOS, video cards, and add-on cards. Depending on the configuration some of the address space may be unused in which case it can be used by EMS or UMB.
- reye's syndrome — an uncommon, severe disorder occurring primarily in children after a viral illness, as influenza or chickenpox, and associated with aspirin usage, involving swelling of the brain and liver and affecting other organs: symptoms include fever, projectile vomiting, confusion, and, sometimes, respiratory arrest.
- reynolds number — a dimensionless number, vρl/η, where v is the fluid velocity, ρ the density, η the viscosity and l a dimension of the system. The value of the number indicates the type of fluid flow
- right-hand buoy — a distinctive buoy marking the side of a channel regarded as the right, or starboard, side.
- rogation sunday — the fifth Sunday after Easter; it sees the start of the supplications that are continued during the following Monday, Tuesday and Wednesday
- romantic comedy — a light and humorous movie, play, etc., whose central plot is a happy love story.
- ross dependency — a territory in Antarctica, including Ross Island, the coasts along the Ross Sea, and adjacent islands: a dependency of New Zealand. About 175,000 sq. mi. (453,250 sq. km).
- rotary debugger — (Commodore) Essential equipment for those late-night or early-morning debugging sessions. Mainly used as sustenance for the hacker. Comes in many decorator colours, such as Sausage, Pepperoni, and Garbage.
- rotary drilling — Rotary drilling is the use of a continuous circular motion of the drill bit to make a hole.
- rough and ready — rough, rude, or crude, but good enough for the purpose: a rough-and-ready estimate of future expenses.
- rough-and-ready — rough, rude, or crude, but good enough for the purpose: a rough-and-ready estimate of future expenses.
- roundaboutility — roundaboutness
- ruddy turnstone — a common shorebird, Arenaria interpres, of the New and Old World arctic, wintering south to southern South America and Australia and having striking reddish-brown, black, and white plumage.
- san jacinto day — a legal holiday observed in Texas on April 21.
- sanitary cordon — cordon sanitaire.
- say a few words — to give a brief speech
- say one's beads — to pray with a rosary
- school holidays — the period during which schools are closed - in the summer, at Christmas and Easter, and at other times of the year
- schottky defect — an unoccupied position in a crystal lattice caused by the relocation of an atom or ion from the interior to the surface of the crystal.
- secondary cause — a cause which is not the primary or ultimate cause
- secondary color — a color, as orange, green, or violet, produced by mixing two primary colors.
- secondary group — a group of people with whom one's contacts are detached and impersonal.
- secondary metal — metal derived wholly or in part from scrap.
- secondary xylem — xylem derived from the cambium during secondary growth.
- self-hypnotized — hypnotized by oneself.
- sell one's body — If someone sells their body, they have sex for money.
- semidocumentary — a film or television programme that is fictional but includes many factual events or details
- serendipitously — come upon or found by accident; fortuitous: serendipitous scientific discoveries.