21-letter words containing a, c, r, d

decompression chamber — a chamber in which the pressure of air can be varied slowly for returning people from abnormal pressures to atmospheric pressure without inducing decompression sickness
deep scattering layer — any of the stratified zones in the ocean which reflect sound during echo sounding, usually composed of marine organisms which migrate vertically from c. 250 to 800 m (c. 820 to 2,625 ft)
democratic centralism — the Leninist principle that policy should be decided centrally by officials, who are nominally democratically elected
dendrochronologically — By the use of, or with reference to dendrochronology.
deoxyribonucleic acid — DNA
department of justice — the department of the U.S. federal government charged with the responsibility for the enforcement of federal laws. Abbreviation: DOJ.
deprovincialization's — to make provincial in character.
detoxification centre — a place that specializes in the treatment of alcoholism or drug addiction
diapason normal pitch — a standard of pitch in which A above middle C is established at 435 vibrations per second.
dictionary definition — the meaning of a word as given in a dictionary or dictionaries
differential calculus — the branch of mathematics that deals with differentials and derivatives.
direct inward dialing — (communications) (DID) A service offered by telephone companies which allows the last 3 or 4 digits of a phone number to be transmitted to the destination exchange. For example, a company could have 10 incoming lines, all with the number 234 000. If a caller dials 234 697, the call is sent to 234 000 (the company's exchange), and the digits 697 are transmitted. The company's exchange then routes the call to extension 697. This gives the impression of 1000 direct dial lines, whereas in fact there are only 10. Obviously, only 10 at a time can be used. This system is also used by fax servers. Instead of an exchange at the end of the 234 000 line, a computer running fax server software and fax modem cards uses the last three digits to identify the recipient of the fax. This allows 1000 people to have their own individual fax numbers, even though there is only one 'fax machine'.
discretionary account — an account in which the stockbroker is allowed complete control over the purchase and sale of securities on the customer's behalf.
discriminant function — a linear function of measurements of different properties of an object or event that is used to assign the object or event to one population or another (discriminant analysis)
dissociative disorder — a mental disorder, as multiple personality, characterized by sudden temporary alteration in consciousness, identity, or motor behavior.
distinctiveness ratio — the ratio of the relative frequency of some event in a given sample to that in the general population or another relevant sample
draft once reuse many — (jargon) (DORUM) Reusing parts of a document to produce parts of an entirely new document. The term normally refers to text documents but the practise is equally common in programming.
drop the handkerchief — a children's game in which all the players but one stand in a circle facing inward, while that one player stealthily drops a handkerchief behind a player in the circle who must pursue and attempt to catch the one who dropped the handkerchief before the latter reaches the vacated place.
dwarf japanese quince — a low, shrubby, Japanese flowering quince, Chaenomeles japonica, of the rose family, having salmon-to-orange flowers and yellow fruit.
dynamic drive overlay — (storage, software) (DDO) Software to allow a system BIOS that does not support Logical Block Addressing to access drives larger than 528 MB. The alternatives are to update the system BIOS or install an EIDE controller card with a suitable on-board BIOS.
eccles-jordan circuit — flip-flop
electric displacement — the electric flux density when an electric field exists in free space into which a dielectric is introduced
electromagnetic field — a field of force associated with a moving electric charge equivalent to an electric field and a magnetic field at right angles to each other and to the direction of propagation
embarras de richesses — a superfluous abundance of options, from which one finds it difficult to select
endoplasmic reticulum — an extensive intracellular membrane system whose functions include synthesis and transport of lipids and, in regions where ribosomes are attached, of proteins
enhanced oil recovery — any of several techniques that make it possible to recover more oil than can be obtained by natural pressure, such as the injection of fluid or gases into an oilfield to force more oil to the surface
enharmonic modulation — a change of key achieved by regarding a note in one key as an equivalent note in another. Thus E flat in the key of A flat could be regarded as D sharp in the key of B major
every nook and cranny — If you talk about every nook and cranny of a place or situation, you mean every part or every aspect of it.
extended architecture — (storage) (XA) A CD-ROM drive specification required by Green Book CD-ROM and White Book CD-ROM formats. Drives labelled "XA ready" may require a firmware upgrade.
faculty board meeting — a meeting of the governing body of a faculty
ferric sodium oxalate — an emerald-green, crystalline, extremely water-soluble salt, used in photography and blueprinting.
financial underwriter — A financial underwriter is an insurance employee working in financial underwriting.
first-dollar coverage — insurance that provides payment for the full loss up to the insured amount with no deductibles.
first-round financing — First round financing is the first time a new company raises money from investors.
flat-coated retriever — one of an English breed of large sporting dogs having a flat, dense, shiny black or liver-colored coat, small ears, and long jaws, used for retrieving game from both water and land.
fluorophosphoric acid — any of three acids containing fluorine and phosphorus, HPF 6 , HPO 2 F 2 , or H 2 PO 3 F.
food conversion ratio — a ratio expressing the weight of food required to produce a unit gain in the live weight of an animal
food standards agency — the full form of FDA
forward compatibility — (jargon) The ability to accept input from later versions of itself. Forward compatibility is harder to achieve than backward compatibility, since, in the backward case, the input format is know whereas a forward compatible system needs to cope gracefully with unknown future features. An example of future compatibility is the stipulation that a web browser should ignore HTML tags it does not recognise. See also extensible.
forward exchange rate — the exchange rate of a currency to be delivered at a later date
fraudulent conversion — conversion committed with the intent to defraud
frederick william iii — 1770–1840, king of Prussia 1797–1840.
french and indian war — the war in America in which France and its Indian allies opposed England 1754–60: ended by Treaty of Paris in 1763.
french fried potatoes — a more formal name for chips
full faith and credit — the obligation under Article IV of the U.S. Constitution for each state to recognize the public acts, records, and judicial proceedings of every other state.
fuming sulphuric acid — a mixture of pyrosulphuric acid, H2S2O7, and other condensed acids, made by dissolving sulphur trioxide in concentrated sulphuric acid
fundamental frequency — the lowest frequency at which a medium will freely oscillate.
garbageabetical order — (humour) 1. The result of using an insertion sort to merge data into an unsorted list. 2. The state of any file or list that is supposed to be sorted, but is not.
garden of remembrance — an area of land containing cultivated plants, trees, etc, to commemorate the dead
gas analysis recorder — A gas analysis recorder is a device which samples, records, and analyses gas.

Was this page helpful?

Yes No

Thank you for your feedback! Tell your friends about this page

Tell us why?