17-letter words containing p, r, o, u, d
- sodium pyroborate — borax1 .
- sodium-vapor lamp — an electric lamp in which sodium vapor is activated by current passing between two electrodes, producing a yellow, glareless light: used on streets and highways.
- sound spectrogram — a graphic representation, produced by a sound spectrograph, of the frequency, intensity, duration, and variation with time of the resonance of a sound or series of sounds.
- southern sporades — a group of Greek islands in the Aegean, including the Dodecanese, lying off the SW coast of Turkey
- spectrum disorder — any of a group of disorders each having symptoms that occur on a continuum and certain features that are shared along its spectrum but that manifest in markedly different forms and degrees. See also autism spectrum disorder.
- spread your wings — if you spread your wings, you do something new and rather difficult or move to a new place, because you feel more confident in your abilities than you used to and you want to gain wider experience
- sulfurated potash — a yellowish-brown mixture consisting mainly of potassium polysulfides and potassium thiosulfate, used in treating mange.
- superaerodynamics — the branch of aerodynamics that deals with gases at very low densities.
- superconductivity — the phenomenon of almost perfect conductivity shown by certain substances at temperatures approaching absolute zero. The recent discovery of materials that are superconductive at temperatures hundreds of degrees above absolute zero raises the possibility of revolutionary developments in the production and transmission of electrical energy.
- supervision order — an order by a juvenile court requiring a named probation officer or local-authority social worker to advise, assist, and befriend a child or young person who is the subject of care proceedings, over a period of up to three years
- supervisory board — a board of management of which nonmanagerial workers are members, having supervisory powers over some aspects of management decision-making
- supreme commander — the military officer commanding all allied forces in a theater of war.
- suspension bridge — a bridge having a deck suspended from cables anchored at their extremities and usually raised on towers.
- synchronous speed — the speed at which an alternating-current machine must operate to generate electromotive force at a given frequency.
- temporomandibular — of, relating to, or situated near the hinge joint formed by the lower jaw and the temporal bone of the skull.
- the underemployed — underemployed people
- to keep your head — If you keep your head, you remain calm in a difficult situation. If you lose your head, you panic or do not remain calm in a difficult situation.
- to open your mind — If something opens your mind to new ideas or experiences, it makes you more willing to accept them or try them.
- to slip your mind — If something slips your mind, you forget it.
- tolpuddle martyrs — six farm workers sentenced to transportation for seven years in 1834 for administering an unlawful oath to form a trade union in the village of Tolpuddle, Dorset
- trapdoor function — a function defined from data by means of a mathematical procedure in such a way that it is easy to obtain the function when the data are known, but when the procedure and data are not known it becomes very difficult to determine the original data: used in cryptography, where the data are the characters of the plain text, or message, and the trapdoor function is the cryptogram.
- uncomprehendingly — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
- undercompensation — to compensate or pay less than is fair, customary, or expected.
- urban development — the development or improvement of an urban area by building
- without prejudice — fairly
- yorkshire pudding — a pudding made of an unsweetened batter of flour, salt, eggs, and milk, baked under meat as it roasts to catch the drippings or baked separately with a small amount of meat drippings.
- zero-coupon bonds — Zero-coupon bonds are bonds with no coupons that do not pay interest, and are sold at a large discount from their face value.