19-letter words containing r, c, n
- cross-fertilization — fertilization by the fusion of male and female gametes from different individuals of the same species
- crown green bowling — (in Britain) bowls played on a crown green
- crystallized ginger — sugar-coated ginger
- cudgel one's brains — to think hard about a problem
- cult of personality — a cult promoting adulation of a living national leader or public figure, as one encouraged by Stalin to extend his power.
- cultural revolution — (in China) a mass movement (1965–68), in which the youthful Red Guard played a prominent part. It was initiated by Mao Tse-tung to destroy the power of the bureaucrats and to revolutionize the attitudes and behaviour of the people
- cup-and-saucer vine — a woody, Mexican vine, Cobaea scandens, of the phlox family, having bell-shaped, violet-colored or greenish-purple flowers with an inflated, leaflike calyx and long, curved stamens.
- current expenditure — expenditure taking place within the financial year in question
- current liabilities — business liabilities maturing within a year
- current transformer — A current transformer is a transformer that is designed to give an accurate current ratio for the purpose of measurement and control.
- curvilinear tracery — tracery, especially of the 14th and 15th centuries, characterized by a pattern of irregular, boldly curved forms.
- customer experience — Customer experience is what customers feel while shopping, affected by such factors as how a store is laid out, the level of service they receive, and how easy it is to find products.
- customer preference — Customer preference is what type of product an individual customer likes and dislikes.
- customs declaration — a form declaring the nature and value of goods, etc, for customs purposes
- customs regulations — the regulations relating to customs in a particular country
- cyril of alexandria — Saint. ?375–444 ad, Christian theologian and patriarch of Alexandria. Feast day: June 27 or June 9
- dancing-lady orchid — any of numerous epiphytic orchids of the genus Oncidium, often grown as houseplants.
- dangling participle — a participle intended to modify a noun but having the wrong grammatical relationship to it as for example having left in the sentence Having left Europe for good, Peter's future seemed bleak indeed
- darby and joan club — a club for elderly people
- data driven machine — (language) (DDM) A dataflow language.
- data encryption key — (DEK) Used for the encryption of message text and for the computation of message integrity checks (signatures). See cryptography.
- data protection act — (legal) (DPA) A UK law guaranteeing rights to individuals in relation to personal data that others hold on them. For example, under the DPA, you have the right to see what data a company holds on you.
- davy jones's locker — the bottom of the sea; grave of those drowned at sea or buried there
- de-compartmentalize — to divide into categories or compartments.
- deacetyltransferase — (enzyme) Any of a class of enzymes that remove acetyl groups, especially from a lysine residue of a histone.
- declaration of love — a statement made by one person to another in which they say they are in love with the other person
- declare an interest — to make known one's connection, esp a prejudicial connection, with an affair
- defence expenditure — the amount that a country spends on military measures or resources
- deflate compression — deflate
- dendrochronological — Pertaining to dendrochronology.
- dental receptionist — a receptionist working in a dental surgery
- deoxycorticosterone — a corticosteroid hormone important in maintaining sodium and water balance in the body
- deoxyribonucleoside — a compound composed of deoxyribose and either a purine or a pyrimidine.
- deoxyribonucleotide — an ester of a deoxyribonucleoside and phosphoric acid; a constituent of DNA.
- department chairman — the chairman of a university department
- dereliction of duty — Dereliction of duty is deliberate or accidental failure to do what you should do as part of your job.
- detective inspector — a police officer who investigates crime and who ranks above a detective sergeant but below a detective chief inspector
- devils-on-horseback — a savoury of prunes wrapped in bacon slices and served on toast
- diamond ring effect — a phenomenon, sometimes observed immediately before and after a total eclipse of the sun, in which one of Baily's beads is much brighter than the others, resembling a diamond ring around the moon.
- dictionary of names — a dictionary of given names that indicates whether a name is usually male, female, or unisex and often includes origins as well as meanings; for example, as by indicating that Evangeline, meaning “good news,” comes from Greek. Used primarily as an aid in selecting a name for a baby, dictionaries of names may also include lists of famous people who have shared a name and information about its current popularity ranking.
- dielectric constant — Electricity. the ratio of the flux density produced by an electric field in a given dielectric to the flux density produced by that field in a vacuum.
- dielectric strength — the maximum voltage that can be applied to a given material without causing it to break down, usually expressed in volts or kilovolts per unit of thickness.
- difference equation — (mathematics) A relation between consecutive elements of a sequence. The first difference is D u(n) = u(n+1) - u(n) where u(n) is the nth element of sequence u. The second difference is u(n+2) + a u(n+1) + b u(n) = 0 can be converted to a difference equation (in this case, a second order linear difference equation): D2 u(n) + p D u(n) + q u(n) = 0 and vice versa. a, b, p, q are constants.
- differential backup — (operating system) A kind of backup that copies all files that have changed since the last full backup. Each differential backup will include all files in previous differential backups since the full backup so to restore a version of a file, you only need to search the full backup and the relevant differential backup. Some systems support differential backup by associating an "Archive" flag with each file and setting this flag whenever the file is modified to indicate that it should be included in the next backup. A differential backup does not change this flag, whereas an incremental backup resets it.
- diffraction grating — a band of equidistant, parallel lines, usually more than 5000 per inch (2000 per centimeter), ruled on a glass or polished metal surface for diffracting light to produce optical spectra.
- diffraction pattern — the phenomenon exhibited by wave fronts that, passing the edge of an opaque body, are modulated, thereby causing a redistribution of energy within the front: it is detectable in light waves by the presence of a pattern of closely spaced dark and light bands (diffraction pattern) at the edge of a shadow.
- digital electronics — (electronics) The implementation of two-valued logic using electronic logic gates such as and gates, or gates and flip-flops. In such circuits the logical values true and false are represented by two different voltages, e.g. 0V for false and +5V for true. Similarly, numbers are normally represented in binary using two different voltages to represented zero and one. Digital electronics contrasts with analogue electronics which represents continuously varying quantities like sound pressure using continuously varying voltages. Digital electronics is the foundation of modern computers and digital communications. Massively complex digital logic circuits with millions of gates can now be built onto a single integrated circuit such as a microprocessor and these circuits can perform millions of operations per second.
- dihydrostreptomycin — an antibiotic, C 21 H 41 N 7 O 12 , derived by organic synthesis from and believed to be less toxic than streptomycin: used in the form of its sulfate chiefly in the treatment of tuberculosis.
- dimetric projection — a type of axonometric projection in which the object is shown with two of its three principal axes tilted equally from the plane of viewing
- direct grant school — (in Britain, formerly) a school financed by endowment, fees, and a state grant conditional upon admittance of a percentage of nonpaying pupils nominated by the local education authority