23-letter words containing a, c, u, d
- fluorochlorohydrocarbon — (organic chemistry) Any compound formally derived from a hydrocarbon by replacing some hydrogen atoms with fluorine and some with chlorine (at least one being retained).
- friction reducing agent — A friction reducing agent is an additive used to reduce friction exerted downhole on tools and pipes.
- fundamental interaction — any of the four basic interactions that occur in nature: the gravitational, electromagnetic, strong, and weak interactions
- gamma-aminobutyric acid — GABA.
- grand duchess charlotte — Grand Duchess (Charlotte Aldegonde Elise Marie Wilhelmine) 1896–1985, sovereign of Luxembourg 1919–64.
- great black-backed gull — any of several white gulls, as Larus marinus (great black-backed gull) having a black back and wings.
- have struck/hit paydirt — If you say that someone has struck paydirt or has hit paydirt, you mean that they have achieved sudden success or gained a lot of money very quickly.
- heaviside unit function — the function that is zero for any number less than zero and that is 1 for any number greater than or equal to zero.
- hunchback of notre dame — French Notre Dame de Paris. a novel (1831) by Victor Hugo.
- hydrochlorofluorocarbon — Any of a class of inert compounds of carbon, hydrogen, hydrocarbons, chlorine, and fluorine, used in place of chlorofluorocarbons as being somewhat less destructive to the ozone layer.
- industrial psychologist — a person who studies human behaviour and cognitive processes in relation to the working environment
- inland marine insurance — insurance chiefly covering risks to goods and means of transportation involved in the transporting of goods overland or by inland waterways.
- islamic fundamentalists — Muslims who believe in, advocate or support a conservative adherence to literal or traditional interpretations of the Qu'ran and the Sunnah
- juan rodriguez cabrillo — Juan Rodríguez [rod-ree-ges] /rɒdˈri gɛs/ (Show IPA), (Joao Rodrigues Cabrilho) 1499?–1543, Spanish explorer, born in Portugal: discovered California.
- light and shade surface — (in architectural shades and shadows) a surface in a plane tangent to the parallel rays from the theoretical light source, treated as a shade surface.
- locally euclidean space — a topological space in which each point has a neighborhood that is homeomorphic to an open set in a Euclidean space of specified dimension.
- lossy audio compression — (audio, compression) Any audio compression algorithm which does not retain every bit of data but only reproduces a signal that sounds more or less like the original. Examples are MP1, MP2, MP3, AAC.
- made out of whole cloth — completely fictitious or false; made up
- message digest function — one-way hash function
- modern sequence dancing — a form of dancing in which ballroom dance steps are used as the basis of a wide variety of different dances typically performed in a sequence
- multimedia compact disc — (storage) (MMCD) A CD-ROM standard for storing 4.7 GB of data including video. MMCD is being developed by a large numer of computer manufacturers and is expected to be shipped in late 1996 or early 1997. Initially it will be aimed at the consumer market, then perhaps in CD-ROM format for computers, and maybe later on erasble CD.
- multiplicative identity — an identity that when used to multiply a given element in a specified set leaves that element unchanged, as the number 1 for the real-number system.
- murder in the cathedral — a verse drama (1935) by T. S. Eliot.
- nondisclosure agreement — a legal contract in which one or more parties agree to keep information, as a trade secret, confidential and protected for a specific amount of time. Abbreviation: NDA.
- ordinary life insurance — life insurance with premiums paid throughout the lifetime of the insured.
- orthodox eastern church — Eastern Orthodox Church
- parasexual reproduction — reproduction by recombination of genes from genetically dissimilar nuclei within binucleate or multinucleate cells, as in filamentous fungi.
- percentage distribution — a frequency distribution is which individual frequencies are shown as a percentage of the total frequencies
- peroxymonosulfuric acid — persulfuric acid (def 1).
- photoelectric magnitude — the magnitude of a star determined using a photometer plus a filter to select light or other radiation of the desired wavelength
- plain old documentation — (text) (pod, occasionally "POD") A simple markup language used to embed documentation, literate programming-style, in Perl programs. Pod readers and converters are part of the standard Perl distribution and the documentation provided with Perl is all in pod format.
- potassium acid tartrate — cream of tartar.
- product differentiation — the real or illusory distinction between competing products in a market
- productivity bargaining — the process of reaching an agreement (productivity agreement) through collective bargaining whereby the employees of an organization agree to changes which are intended to improve productivity in return for an increase in pay or other benefits
- professional misconduct — a violation of the rules or boundaries set by the governing body of a profession
- profit and loss account — income account (def 2).
- publicly-quoted company — a company whose shares are traded on a stock exchange
- put the record straight — to correct an error or misunderstanding
- quantum electrodynamics — the quantum field theory that deals with the electromagnetic field and its interaction with electrons and positrons. Abbreviation: QED.
- quantum flavourdynamics — a gauge theory of the electromagnetic and weak interactions
- queen charlotte islands — a group of about 150 islands off the W coast of Canada: part of British Columbia. Pop: about 6000 (latest est). Area: 9596 sq km (3705 sq miles)
- quote chapter and verse — [by analogy with the mainstream phrase] To cite a relevant excerpt from an appropriate bible. "I don't care if "rn" gets it wrong; "Followup-To: poster" is explicitly permitted by RFC 1036. I'll quote chapter and verse if you don't believe me." See also legalese, language lawyer, RTFS (sense 2).
- rectangular coordinates — Usually, rectangular coordinates. either of two Cartesian coordinates in which the axes meet at right angles.
- refuse disposal service — a place or facility where rubbish and waste can be disposed
- residual current device — a circuit-breaking device installed in electrical equipment to protect the operator from electrocution
- residual debt insurance — Residual debt insurance is a type of risk insurance that banks often require when granting a loan, which is used to guarantee that the loan is repaid in the event of death or disability.
- rheumatic heart disease — damage to the heart, especially to the valves, as a result of rheumatic fever, characterized by inflammation of the myocardium or scarring and malfunction of the heart valves.
- right circular cylinder — a cylinder generated by the revolution of a rectangle about one of its sides.
- rsa data security, inc. — (cryptography, company) (After Rivest, Shamir, Adleman - see RSA) A recognised world leader in cryptography, with millions of copies of its software encryption and authentication installed and in use worldwide. RSA's technologies are the global de facto standard for public key cryptography and digital signatures, and are part of existing and proposed standards for the Internet, ITU-T, ISO, ANSI, PKCS, IEEE and business and financial networks around the world.
- russian orthodox church — the national Church of Russia, constituting a branch of the Eastern Church, presided over by the Patriarch of Moscow