18-letter words containing i, r, e, p, l
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- currency principle — the principle that banks should be permitted to issue notes only against bullion or coin.
- cyclic pitch lever — a lever in a helicopter to change the angle of attack of individual rotor blades, causing the helicopter to move forwards, backwards, or sideways
- daisywheel printer — (printer) A kind of impact printer where the characters are arranged on the ends of the spokes of a wheel (resembling the petals on a daisy). The wheel (usually made of plastic) is rotated to select the character to print and then an electrically operated hammer mechanism bends the selected spoke forward slightly, sandwiching an ink ribbon between the character and the paper, as in a typewriter. One advantage of this arrangement over that of a typewriter is that different wheels may be inserted to produce different typefaces.
- decachlorobiphenyl — (organic compound) The fully chlorinated polychlorinated biphenyl containing ten chlorine atoms.
- decompartmentalize — to remove excessive compartmentalization from (an organization)
- delmarva peninsula — a peninsula of the northeast US, between Chesapeake Bay and the Atlantic
- dependent variable — a variable in a mathematical equation or statement whose value depends on that taken on by the independent variable
- depository library — a library designated by law to receive without charge all or a selection of the official publications of a government.
- descriptive clause — a relative clause that describes or supplements but is not essential in establishing the identity of the antecedent and is usually set off by commas in English. In This year, which has been dry, is bad for crops the clause which has been dry is a nonrestrictive clause.
- developing country — a nonindustrialized poor country that is seeking to develop its resources by industrialization
- development period — a length of time during which a company grows
- devil's paintbrush — a perennial European hawkweed (Hieracium aurantiacum) with leafless flower stalks bearing a cluster of orange-red heads: now a common weed in N U.S. and Canada
- dietary supplement — a substance taken in addition to what you eat in order to promote health
- dimethyltryptamine — a hallucinogenic drug, C 12 H 16 N 2 , with an action of short duration. Abbreviation: DMT.
- diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
- diplomatic service — diplomatic corps
- dispersible tablet — A dispersible tablet is a tablet that disintegrates in water or other liquid.
- disproportionately — not proportionate; out of proportion, as in size or number.
- dominican republic — a republic in the West Indies, occupying the E part of the island of Hispaniola. 19,129 sq. mi. (49,545 sq. km). Capital: Santo Domingo.
- dry-powder inhaler — A dry-powder inhaler is a device that delivers medication to the lungs in the form of a dry powder.
- eclipsing variable — a variable star whose changes in brightness are caused by periodic eclipses of two stars in a binary system.
- eggshell porcelain — a type of very thin translucent porcelain originally made in China
- ejaculatio praecox — premature ejaculation during sexual intercourse
- electric potential — the work required to transfer a unit positive electric charge from an infinite distance to a given point against an electric field
- electrocardiograph — A machine used for electrocardiography.
- electronic receipt — An electronic receipt is one created in a computerized cash register, or by an online retailer. It will usually show the date and time, how payment is made, and other details of the sale.
- electrotherapeutic — Relating to electrotherapeutics.
- elizabeth petrovna — 1709-62; empress of Russia (1741-62): daughter of Peter I
- employment service — (in the United States) a government department established to collect and supply to the unemployed information about job vacancies and to employers information about availability of prospective workers
- entrepreneurialism — The spirit or state of acting in an entrepreneurial manner.
- equinoctial spring — either of the two highest spring tides that occur at the equinoxes
- erectile impotence — impotence caused by the inability of the penis to become sufficiently firm to penetrate the vagina
- expressionlessness — The state of being without an expression.
- false imprisonment — the unlawful restraint of a person from exercising the right to freedom of movement.
- farewell-to-spring — a slender, showy plant, Clarkia amoena, of the evening primrose family, native to western North America, having satiny, cup-shaped, lilac-crimson or reddish-pink flowers and roundish fruit.
- fermat's principle — Optics. the law that the path taken by a ray of light in going from one point to another point will be the path that requires the least time.
- forward compatible — forward compatibility
- fulminating powder — powder that explodes by percussion.
- funeral procession — ceremonial cortège at a burial
- general precession — the precession that results from both lunisolar precession and planetary precession; precession of the equinoxes.
- geometrical optics — the branch of optics dealing with light as rays, especially in the study of the effects of lenses and mirrors on light beams and of their combination in optical instruments.
- giuseppe garibaldi — Giuseppe [juh-sep-ee;; Italian joo-zep-pe] /dʒəˈsɛp i;; Italian dʒuˈzɛp pɛ/ (Show IPA), 1807–82, Italian patriot and general.
- glomerulonephritis — a kidney disease affecting the capillaries of the glomeruli, characterized by albuminuria, edema, and hypertension.
- golden opportunity — perfect chance
- greater periwinkle — a Eurasian apocynaceous evergreen plant of the genus Vinca, V. major, having trailing stems and blue flowers
- grumbling appendix — a condition in which the appendix causes intermittent pain but appendicitis has not developed
- half-open interval — a set of numbers between two given numbers but including only one endpoint.
- hamilton's problem — Hamiltonian problem
- helicopter gunship — military attack helicopter