28-letter words containing a, d, i, n, t

quaternary ammonium compound — any of a class of salts derived from ammonium in which the nitrogen atom is attached to four organic groups, as in benzalkonium chloride; the salts are cationic surface-active compounds used as antiseptics and disinfectants.
radio frequency interference — (hardware, testing) (RFI) Electromagnetic radiation which is emitted by electrical circuits carrying rapidly changing signals, as a by-product of their normal operation, and which causes unwanted signals (interference or noise) to be induced in other circuits. The most important means of reducing RFI are: use of bypass or "decoupling" capacitors on each active device (connected across the power supply, as close to the device as possible), risetime control of high speed signals using series resistors and VCC filtering. Shielding is usually a last resort after other techniques have failed because of the added expense of RF gaskets and the like. The efficiency of the radiation is dependent on the height above the ground or power plane (at RF one is as good as the other) and the length of the conductor in relationship to the wavelength of the signal component (fundamental, harmonic or transient (overshoot, undershoot or ringing)). At lower frequencies, such as 133 MHz, radiation is almost exclusively via I/O cables; RF noise gets onto the power planes and is coupled to the line drivers via the VCC and ground pins. The Rf is then coupled to the cable through the line driver as common node noise. Since the noise is common mode, shielding has very little effect, even with differential pairs. The RF energy is capacitively coupled from the signal pair to the shield and the shield itself does the radiating. At higher frequencies, usually above 500 Mhz, traces get electrically longer and higher above the plane. Two techniques are used at these frequencies: wave shaping with series resistors and embedding the traces between the two planes. If all these measures still leave too much RFI, sheilding such as RF gaskets and copper tape can be used. Most digital equipment is designed with metal, or coated plastic, cases. Switching power supplies can be a source of RFI, but have become less of a problem as design techniques have improved. Most countries have legal requirements that electronic and electrical hardware must still work correctly when subjected to certain amounts of RFI, and should not emit RFI which could interfere with other equipment (such as radios). See also Electrostatic Discharge, Electromagnetic Compatibility.
read the riot act to someone — to warn or reprimand someone severely
relative index of refraction — a number indicating the speed of light in a given medium as either the ratio of the speed of light in a vacuum to that in the given medium (absolute index of refraction) or the ratio of the speed of light in a specified medium to that in the given medium (relative index of refraction) Symbol: n.
robert william andrew feller — Robert William Andrew ("Bob"; "Bullet Bob") 1918–2010, U.S. baseball player.
rocky mountain spotted fever — an infectious disease characterized by high fever, pains in joints, bones, and muscles, and a cutaneous eruption, caused by rickettsii and transmitted by ticks: first reported in the Rocky Mountain area, but now more widely distributed.
savings and loan association — a depositor-owned organization that solicits savings to be placed in saving accounts or in share accounts, on which interest or dividends are paid, and from which mortgage loans on homes or real estate are made
second axiom of countability — the property satisfied by a topological space in which the neighborhood system of each point has a base consisting of a countable number of neighborhoods (first axiom of countability) or the property satisfied by a topological space that has a base for its topology consisting of a countable number of subsets of the space (second axiom of countability)
second law of thermodynamics — any of three principles variously stated in equivalent forms, being the principle that the change of energy of a thermodynamic system is equal to the heat transferred minus the work done (first law of thermodynamics) the principle that no cyclic process is possible in which heat is absorbed from a reservoir at a single temperature and converted completely into mechanical work (second law of thermodynamics) and the principle that it is impossible to reduce the temperature of a system to absolute zero in a finite number of operations (third law of thermodynamics)
secondary sex characteristic — any of a number of manifestations, as development of breasts or beard, muscularity, distribution of fat tissue, and change of pitch in voice, specific to each sex and incipient at puberty but not essential to reproduction.
service advertising protocol — (networking) (SAP) A Novell NetWare protocol. SAP follows the spirit of the Xerox Clearinghouse protocol, it permits file, print, and gateway servers to advertise their services and addresses.
sexually transmitted disease — any disease characteristically transmitted by sexual contact, as gonorrhea, syphilis, genital herpes, and chlamydia. Abbreviation: STD.
shared-appreciation mortgage — a type of mortgage that carries a smaller down payment or lower interest rate than usual in return for the lender's sharing in the appreciation of the property at some future date, as at the time of its sale. Abbreviation: SAM.
sign one's own death warrant — A death warrant is an official document which orders that someone is to be executed as a punishment for a crime.
simulation oriented language — (language) (SOL) An ALGOL extension for discrete simulation by Donald Knuth and McNeley.
single sideband transmission — a method of transmitting radio waves in which either the upper or the lower sideband is transmitted, the carrier being either wholly or partially suppressed. This reduces the required bandwidth and improves the signal-to-noise ratio
smooth endoplasmic reticulum — a network of tubular membranes within the cytoplasm of the cell, occurring either with a smooth surface (smooth endoplasmic reticulum) or studded with ribosomes (rough endoplasmic reticulum) involved in the transport of materials.
software productivity centre — (body) (SPC) A non-profit organisation based in Vancouver, BC, Canada with the mandate to assist software developers to improve their software engineering process.
standard normal distribution — a normal distribution with mean zero and variance 1, with probability density function [exp(–1⁄2x2)]/√2π
standard operating procedure — a set of fixed instructions or steps for carrying out usually routine operations. Abbreviation: SOP.
strictly decreasing function — a function having the property that for any two points in the domain such that one is larger than the other, the image of the larger point is less than the image of the smaller point.
sudden infant death syndrome — death from the sudden cessation of breathing (apnea) of a seemingly healthy infant, almost always during sleep, sometimes traceable to a chronic oxygen deficiency. Abbreviation: SIDS.
systems administrators guild — (body, job) (SAGE) A special technical group of the USENIX Association.
television interface adaptor — (hardware, graphics) (TIA) The graphics chip in the Atari 2600, also used as a sound chip for some arcade game.
text reckoning and compiling — (language) (TRAC) An interactive macro generator language for string manipulation by Calvin N. Mooers and Peter Deutsch of Sun Microsystems. TAC derived ideas from Macro SAP. There are versions for PDP-1, PDP-8, PDP-10 and PDP-11. See also MINT, SAM76. E-mail: Preston Briggs <[email protected]>.
the everglades national park — the Florida park established to preserve the flora and fauna of the Everglade swamps
the last word/the final word — If someone has the last word or the final word in a discussion, argument, or disagreement, they are the one who wins it or who makes the final decision.
the long and the short of it — the essential points or facts
the medical research council — a government body that uses public funds to finance research in medicine
the world owes them a living — If you say that someone thinks that the world owes them a living, you are criticizing them because they think it is their right to have a comfortable life without having to make any effort at all.
the wrong side of the tracks — the unfashionable or poor district or stratum of a community
theophylline ethylenediamine — aminophylline.
to be in someone's bad books — If you are in someone's bad books, they are annoyed with you. If you are in their good books, they are pleased with you.
to handle sb with kid gloves — to treat someone with great tact or caution
to have your cake and eat it — If you think that someone wants the benefits of doing two things when it is only reasonable to expect the benefits of doing one, you can say that they want to have their cake and eat it.
to make someone's blood boil — If you say that something makes your blood boil, you are emphasizing that it makes you very angry.
to play into someone's hands — If you play into someone's hands, you do something which they want you to do and which places you in their power.
to set/put sb's mind at rest — To put someone's mind at rest or set their mind at rest means to stop them worrying about something.
to stand comparison with sth — If someone or something stands or bears comparison with another person or thing, they are as good, or almost as good.
to take something lying down — If someone takes an insult or attack lying down, they accept it without protesting.
to throw caution to the wind — If you throw caution to the wind, you behave in a way that is not considered sensible or careful.
united states postal service — an independent federal agency created in 1971 to replace the Post Office Department as the division of the federal government responsible for postal services. Abbreviation: USPS.
variable-density wind tunnel — a closed-circuit wind tunnel entirely contained in a casing in which the pressure and therefore the density of the working fluid can be maintained at a preselected value
vendor independent messaging — (networking) (VIM) An electronic mail API promoted by an industry group headed by Lotus Development. VIM is a competitor to Microsoft's MAPI.
virgin islands national park — a national park on St. John Island, Virgin Islands: prehistoric Indian relics. 24 sq. mi. (62 sq. km).
walden, or life in the woods — a book of philosophical observations (1854) by Thoreau.
windows management interface — (Microsoft, system management) (WMI) Microsoft's implementation of Web-Based Enterprise Management, a DMTF initiative to establish standards for accessing and sharing system management information over an enterprise network.
work projects administration — WPA.
zeroth law of thermodynamics — the principle that any two systems in thermal equilibrium with a third system are in thermal equilibrium with each other. Compare law of thermodynamics (def 2).

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