19-letter words containing l, u, c, r, e
- developable surface — a surface that can be flattened onto a plane without stretching or compressing any part of it, as a circular cone.
- 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.
- directional coupler — (communications) (tap) A passive device used in cable systems to divide and combine radio frequency signals. A directional coupler has at least three ports: line in, line out, and the tap. The signal passes between line in and line out ports with loss referred to as the insertion loss. A small portion of the signal power applied to the line in port passes to the tap port. A signal applied to the tap port is passed to the line in port less the tap attenuation value. The tap signals are isolated from the line out port to prevent reflections. A signal applied to the line out port passes to the line in port and is isolated from the tap port. Some devices provide more than one tap output line (multi-taps).
- double counterpoint — invertible counterpoint using two transposable voices.
- double-helical gear — herringbone gear.
- early purple orchid — a Eurasian orchid, Orchis mascula, with purplish-crimson flowers and stems marked with blackish-purple spots
- educational adviser — a person who provides advice and training to teachers about teaching methods and educational policies
- elastomeric closure — An elastomeric closure is a component that closes a piece of packaging. An elastomeric closure is made from a material that is able to resume its original shape when it is removed from the packaging and may be in direct contact with the drug enclosed in the pack.
- electroconductivity — Electrical conductivity.
- electroluminescence — Luminescence produced electrically, especially in a phosphor by the application of a voltage.
- electron multiplier — a device for amplifying and measuring a flux of electrons. Each electron hits an anode surface and releases secondary electrons that are accelerated to a second surface; after several such stages a measurable pulse of current is obtained
- electrostatic units — the system of CGS electric and magnetic units that assigns the value of one to the dielectric constant of a vacuum
- electrotherapeutics — (medicine) the use of electricity in therapeutics.
- entry qualification — the qualifications and conditions required to join an organization, club, etc
- euclidean algorithm — Euclid's Algorithm
- exclusion principle — Pauli exclusion principle
- executive privilege — Executive privilege is the right that a member of the executive branch of government has to withhold information about matters that they consider to be confidential.
- fellow countrywoman — a fellow countrywoman is a female citizen of the same state as the person speaking, writing, or being referred to
- female circumcision — clitoridectomy.
- flannelmouth sucker — a sucker, Catostomus latipinnis, of the Colorado River and its tributaries.
- focal plane shutter — an opaque shield in a camera, lying in the focal plane of the lens, that, when tripped, admits light to expose the film or plate for a predetermined period, usually a fraction of a second
- focal-plane shutter — a camera shutter situated directly in front of the film.
- foregone conclusion — an inevitable conclusion or result.
- four colour theorem — four colour map theorem
- four eyes principle — the requirement that a business transaction be approved by at least two individuals
- fractional currency — coins or paper money of a smaller denomination than the basic monetary unit.
- fraternal insurance — insurance underwritten by a fraternal society, under either a legal reserve plan or an assessment plan.
- full-wave rectifier — a rectifier that transmits both halves of a cycle of alternating current as a direct current.
- functional currency — Functional currency is the main currency used by a business.
- gaius julius caesar — Gaius [gey-uh s] /ˈgeɪ əs/ (Show IPA), (or Caius) [key-uh s] /ˈkeɪ əs/ (Show IPA), Julius, c100–44 b.c, Roman general, statesman, and historian.
- gastrocolic omentum — the peritoneal fold attached to the stomach and the colon and hanging over the small intestine.
- general linguistics — the study of the characteristics of language in general rather than of a particular language; theoretical, rather than applied, linguistics.
- geneva nomenclature — an internationally accepted system for naming organic carbon compounds.
- giraldus cambrensis — literary name of Gerald de Barri. ?1146–?1223, Welsh chronicler and churchman, noted for his accounts of his travels in Ireland and Wales
- gloucester old spot — a hardy rare breed of pig, white with a few black markings, that originally lived off windfalls in orchards in the Severn valley
- go round in circles — to engage in energetic but fruitless activity
- goldbach conjecture — an unproved theorem that every even integer greater than 2 can be written as the sum of two prime numbers.
- grand duke nicholas — of Cusa [kyoo-zuh] /ˈkyu zə/ (Show IPA), 1401–1464, German cardinal, mathematician, and philosopher. German Nikolaus von Cusa.
- guerrilla financing — the use of unconventional and marginally legal means to capitalize enterprises
- gulf of carpentaria — a shallow inlet of the Arafura Sea, in N Australia between Arnhem Land and Cape York Peninsula
- hairy cell leukemia — a form of cancer in which abnormal cells with many hairlike cytoplasmic projections appear in the bone marrow, liver, spleen, and blood.
- handlebar moustache — a man's moustache having long, curved ends that resemble the handlebars of a bicycle.
- haul over the coals — a black or dark-brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Compare anthracite, bituminous coal, lignite.
- house of councilors — the upper house of the Japanese diet.
- household insurance — an arrangement in which you pay money to a company, and they pay money to you if your household goods are stolen or damaged
- hudson river school — a group of American painters of the mid-19th century whose works are characterized by a highly romantic treatment of landscape, especially along the Hudson River.
- hyperbolic function — a function of an angle expressed as a relationship between the distances from a point on a hyperbola to the origin and to the coordinate axes, as hyperbolic sine or hyperbolic cosine: often expressed as combinations of exponential functions.
- in particular terms — If you say something in particular terms, you say it using a particular type or level of language or using language which clearly shows your attitude.
- incommensurableness — (rare) Incommensurability.
- incomplete fracture — a fracture extending partly across the bone.