21-letter words containing d, i, s, g, u
- ring-around-the-rosey — a children's game in which the players sing while going around in a circle and squat when the lyrics “all fall down” are sung.
- roodepoort-maraisburg — a city in S Transvaal, in the NE Republic of South Africa.
- rutherford scattering — the scattering of an alpha particle through a large angle with respect to the original direction of motion of the particle, caused by an atom (Rutherford atom) with most of the mass and all of the positive electric charge concentrated at a center or nucleus.
- sampling distribution — the distribution of a statistic based on all possible random samples that can be drawn from a given population.
- sing a different tune — a succession of musical sounds forming an air or melody, with or without the harmony accompanying it.
- sovereign wealth fund — an investment fund created using the financial assets of a national government
- submerged arc welding — a type of heavy electric-arc welding using mechanically fed bare wire with the arc submerged in powdered flux to keep out oxygen
- suction and curettage — a technique involving extraction of the fetus through a suction tube, used to perform abortions during the early stages of pregnancy.
- surface friction drag — the part of the drag on a body moving through a fluid that is dependent on the nature of the surface of the body
- to rear its ugly head — If something unpleasant rears its head or rears its ugly head, it becomes visible or noticeable.
- trades union congress — The Trades Union Congress in Britain is the same as the TUC.
- tsutsugamushi disease — scrub typhus.
- undesirable discharge — a discharge under other than honorable conditions of a person from military service by administrative action.
- xeroderma pigmentosum — a rare inherited disease characterized by sensitivity to ultraviolet light, exposure resulting in lesions and tumors of the skin and eyes.