26-letter words containing d, r, y, n
- official production system — (language) (OPS) The first production system (i.e. rule based) programming language, developed at CMU in 1970 and used for building expert systems. OPS was originally written in Franz Lisp and later ported to other LISP dialects.
- period-luminosity relation — the relationship between the period of light variation and of the absolute magnitude of Cepheid variable stars.
- phenylethylbarbituric acid — phenobarbital.
- primo de rivera y orbaneja — Miguel [mee-gel] /miˈgɛl/ (Show IPA), 1870–1930, Spanish general and dictator 1923–30.
- privately held corporation — A privately held corporation is a company whose shares cannot be bought by the general public.
- propoxyphene hydrochloride — a white, crystalline, narcotic analgesic, C22H29NO2·HCl, used for the alleviation of moderate pain
- recombinant dna technology — any of various techniques for separating and recombining segments of DNA or genes, often employing a restriction enzyme to cut a gene from a donor organism and inserting it into a plasmid or viral DNA for transplantation into a host organism, where the gene causes the production of a desired substance either for harvesting or for the benefit of the host organism itself.
- red-backed squirrel monkey — a related species, Saimiri oerstedi, of Central America, having a reddish coat and dark brown limbs
- reticuloendothelial system — the aggregate of the phagocytic cells, including certain cells of the bone marrow, lymphatic system, liver, and spleen, that have reticular and endothelial characteristics and function in the immune system's defense against foreign bodies. Abbreviation: RES.
- sixty-four-dollar question — the critical or basic question or problem: Whether the measure will get through Congress this session or not is the sixty-four-dollar question.
- statistical-thermodynamics — the science that deals with average properties of the molecules, atoms, or elementary particles in random motion in a system of many such particles and relates these properties to the thermodynamic and other macroscopic properties of the system.
- subscriber identity module — (telecommunications, wireless) (SIM or "SIM card") A component, usually in the form of a miniature smart-card, that is theoretically tamper-proof and is used to associate a mobile subscriber with a mobile network subscription. The SIM holds the subscriber's unique MSISDN along with secret information such as a private encryption key and encryption and digital signature algorithms. Most SIMs also contain non-volatile storage for network and device management, contact lists, text messages sent and received, logos and in some cases even small Java programs.
- system product interpreter — Restructured EXtended eXecutor
- temperature-humidity index — a number representing an estimate of the effect of temperature and moisture on humans, computed by multiplying the sum of dry-bulb and wet-bulb temperature readings by 0.4 and adding 15, with 65 assumed as the highest comfortable index. Abbreviation: T.H.I.
- the department of the navy — the United States federal department that supports and leads the United States Navy and the United States Marine Corps
- the entertainment industry — the businesses connected with music, films, TV etc
- the royal and ancient club — a golf club, headquarters of the sport's ruling body, based in St Andrews, Scotland
- to get your fingers burned — If you get your fingers burned or burn your fingers, you suffer because something you did or were involved in was a failure or a mistake.
- to get your house in order — If someone gets their house in order, puts their house in order, or sets their house in order, they arrange their affairs and solve their problems.
- very long instruction word — (language, architecture) (VLIW) Used to describe a machine code instruction set implemented using horizontal microcode. A horizontally encoded instruction word which encodes four or more operations might be considered "very long". VLIW architectures are sometimes classified as a type of static superscalar architecture. They are static in the sense that which units operate in parallel is determined by the instruction rather than by dynamic scheduling at run time. Producing code for VLIW machines is difficult; trace scheduling is a helpful compiler technique. The most famous VLIW machine was built by (the late) Multiflow Computer, Inc.
- yellow-crowned night heron — any of several thick-billed, crepuscular or nocturnal herons of the genus Nycticorax and related genera, as N. nycticorax (black-crowned night heron) of the Old and New Worlds, and Nyctanassa violacea (yellow-crowned night heron) of America.
- you wouldn't read about it — an expression of dismay, disgust, or disbelief
- young offender institution — (in Britain) a place where offenders aged 15 to 21 may be detained and given training, instruction, and work
- zollinger-ellison syndrome — a condition in which a gastrin-secreting tumor of the pancreas or small intestine causes excessive secretion of gastric juice, leading to intractable peptic ulcers.