26-letter words containing t, r, o, i, s
- object constraint language — (language) (OCL) A formal specification language extension to UML. The Object Constraint Language is a precise text language that provides constraint and object query expressions on an object-oriented model that cannot otherwise be expressed by diagrammatic notation. OCL supplements UML by providing expressions that have neither the ambiguities of natural language nor the inherent difficulty of using complex mathematics. OCL is a descendent of Syntropy, a second-generation object-oriented analysis and design method. The OCL 1.4 definition specified a constraint language. In OCL 2.0, the definition has been extended to include general object query language definitions.
- 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.
- on the straight and narrow — If something keeps people on the straight and narrow, it helps to keep them living an honest or healthy life.
- open the door to something — If someone or something opens the door to a good new idea or situation, they introduce it or make it possible.
- or otherwise/and otherwise — You use or otherwise or and otherwise to mention something that is not the thing just referred to or is the opposite of that thing.
- orbiting solar observatory — OSO.
- orthogonal instruction set — (architecture) An instruction set where all (or most) instructions have the same format and all registers and addressing modes can be used interchangeably - the choices of op code, register, and addressing mode are mutually independent (loosely speaking, the choices are "orthogonal"). This contrasts with some early Intel microprocessors where only certain registers could be used by certain instructions. Examples include the PDP-11, 680x0, ARM, VAX.
- paraconsistent probability — (logic) A notion introduced by Florentin Smarandache: The probability (T, I, F) that an event occurs is calculated from different sources which may be contradictory or may overlap information; here T, I, F are real subsets representing the truth, indeterminacy, and falsity percentages respectively, and n_sup = sup(T)+sup(I)+sup(F) > 100. See neutrosophic probability
- parent teacher association — an organization of teachers and the parents of their students, as within a public school, to promote mutual understanding and to increase the effectiveness of the educational program. Abbreviation: PTA, P.T.A.
- parent-teacher association — an organization of teachers and the parents of their students, as within a public school, to promote mutual understanding and to increase the effectiveness of the educational program. Abbreviation: PTA, P.T.A.
- period-luminosity relation — the relationship between the period of light variation and of the absolute magnitude of Cepheid variable stars.
- personal digital assistant — a handheld computer, often pen-based, that provides especially organizational software, as an appointment calendar, and communications hardware, as a fax modem. Abbreviation: PDA.
- philosophical anthropology — anthropology (def 4).
- philosophical-anthropology — the science that deals with the origins, physical and cultural development, biological characteristics, and social customs and beliefs of humankind.
- physical transport network — (communications) (PTN) The actual hardware through which data transfer devices are connected.
- pick up the threads of sth — If you pick up the threads of an activity, you start it again after an interruption. If you pick up the threads of your life, you become more active again after a period of failure or bad luck.
- post-and-beam construction — wall construction in which beams rather than studs are used to support heavy posts.
- postprandial thermogenesis — the rate at which food is broken down after a meal and used by your body
- principle of superposition — any of several physical laws that the resultant of similar vector quantities at a point is a function of the sum of the individual quantities, especially the law that the displacement at a point in a medium undergoing simple harmonic motion is equal to the sum of the displacements of each individual wave.
- professional office system — (messaging) (PROFS) An office messaging system from IBM, used worldwide, mainly on IBM mainframes.
- public prosecutor's office — the legal department that is responsible for putting people on trial on behalf of the government and people of a particular country
- public-service corporation — a private or quasi-private corporation chartered to provide an essential commodity or service to the public.
- pulse repetition frequency — the number of pulses per second in a system of pulse transmission. Abbreviation: PRF.
- put a bug in someone's ear — Also called true bug, hemipteran, hemipteron. a hemipterous insect.
- put one's signature to sth — If you put your signature to a document, you sign it as a way of officially showing that you agree with what is written.
- put sb out of their misery — If you put someone out of their misery, you tell them something that they are very anxious to know.
- quasi-stellar radio source — a quasar having detectable radio emission. Abbreviation: QSS.
- quite apart from something — used to indicate that you are aware of one aspect of a situation, but that you are going to focus on another aspect
- real-time operating system — (operating system) (RTOS) Any operating system where interrupts are guaranteed to be handled within a certain specified maximum time, thereby making it suitable for control of hardware in embedded systems and other time-critical applications. RTOS is not a specific product but a class of operating systems.
- record management services — (operating system) (RMS) Procedures in the VMS operating system that programs call to process files and records within files. RMS allows programs to issue GET and PUT requests at the record level (record I/O) as well as read and write blocks (block I/O). VMS RMS is an integral part of the system software; its procedures run in executive mode.
- refinery’s own consumption — Refinery's own consumption is the gas and fuel which is burnt to operate the units in a refinery and generate electricity and steam.
- remembrance of things past — a novel (1913–27) by Marcel Proust.
- repetitive strain disorder — overuse strain injury
- replacement cost insurance — Replacement cost insurance is insurance in which the cost of replacing property is calculated without a reduction for depreciation.
- resistance transfer factor — R factor.
- 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.
- richthofen's flying circus — the German 11th Chasing Squadron of World War I, commanded by Baron Richthofen
- ride roughshod over sb/sth — If you say that someone is riding roughshod over a person or their views, you disapprove of them because they are using their power or authority to do what they want, completely ignoring that person's wishes.
- sangre de cristo mountains — a mountain range in S Colorado and N New Mexico: part of the Rocky Mountains. Highest peak: Blanca Peak, 4364 m (14 317 ft)
- santiago de los caballeros — a city in the N central Dominican Republic.
- scares the life out of you — If you want to emphasize that something scares you a lot, you can say that it scares the hell out of you or scares the life out of you.
- schroder-bernstein theorem — the theorem of set theory that if two sets are so related that each can be placed in one-to-one correspondence with a subset of the other, then the sets are equivalent.
- scintillation spectrometer — a scintillation counter adapted for measuring the energy distribution of particles emitted in radioactive processes.
- search engine optimization — the process of adjusting the content, structure, etc, of a website so that it will be displayed prominently by a search engine
- senior chief petty officer — a noncommissioned officer ranking above a chief petty officer and below a master chief petty officer. Abbreviation: SCPO.
- serotonin receptor agonist — A serotonin receptor agonist is any compound that activates serotonin receptors when serotonin is not present.
- service discovery protocol — (protocol) (SDP) A Bluetooth protocol in the Core Protocol Stack that allows devices to connect to other services.
- set someone's mind at rest — to reassure someone or settle someone's mind
- simple algebraic extension — a simple extension in which the specified element is a root of an algebraic equation in the given field.
- 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.