21-letter words containing s, t, u, d, i, o
- saint-maur-des-fosses — a town in N central France, near Paris, on the Marne River.
- sampling distribution — the distribution of a statistic based on all possible random samples that can be drawn from a given population.
- scalar triple product — the volume of the parallelepiped defined by three given vectors, u, v, and w, usually represented as u·v 1 (v×w), [ uvw ], or (uvw), where × denotes a cross product and · denotes an inner product.
- school superintendent — an official whose job is to oversee school administration within a district
- silicon tetrafluoride — a colorless, fuming gas, SiF 4 , used chiefly in the manufacture of fluosilicic acid.
- sinusoidal projection — an equal-area projection in which parallels are straight lines spaced at regular intervals, the central meridian is a straight line one-half the length of the equator, and the other meridians are curves symmetrical to the central meridian.
- snr bandwidth product — (communications) The integral of the SNR over frequency. The SNR bandwidth product is an important limit in the capacity of a communication channel.
- sodium metabisulphite — an inorganic compound with the chemical formula Na2S2O5 that is used as a preservative, antioxidant and disinfectant
- sovereign wealth fund — an investment fund created using the financial assets of a national government
- statutory declaration — a declaration made under statutory authority before a justice of the peace or commissioner for oaths which may in certain cases be substituted for a statement on oath
- student participation — the extent to which students participate or involve themselves in a class, course, etc
- 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
- the student community — the body of students in further and higher education, considered as a whole
- think outside the box — to think in a different, innovative, or original manner, esp with regard to business practices, products, systems, etc
- time and motion study — the systematic investigation and analysis of the motions and the time required to perform a specific operation or task with a view to seeking more efficient methods of production as well as setting time standards.
- to be mixed up in sth — if you are mixed up in something, usually something bad, you are involved in it
- to put the wind up sb — If something or someone puts the wind up you, they frighten or worry you.
- to rear its ugly head — If something unpleasant rears its head or rears its ugly head, it becomes visible or noticeable.
- to rub shoulders with — If you rub shoulders with famous people, you meet them and talk to them. You can also say that you rub elbows with someone, especially in American English.
- to sow your wild oats — If a young person sows their wild oats, they behave in a rather uncontrolled way, especially by having a lot of sexual relationships.
- to stick in your mind — If something sticks in your mind, it remains firmly in your memory.
- trades union congress — The Trades Union Congress in Britain is the same as the TUC.
- universal disk format — (storage, standard) (UDF) A CD-ROM file system standard that is required for DVD ROMs. UDF is the OSTA's replacement for the ISO 9660 file system used on CD-ROMs, but will be mostly used on DVD. DVD multimedia disks use UDF to contain MPEG audio and video streams. To read DVDs you need a DVD drive, the kernel driver for the drive, MPEG video support, and a UDF driver. DVDs containing both UDF filesystems and ISO 9660 filesystems can be read without UDF support. UDF can also be used by CD-R and CD-RW recorders in packet writing mode.
- university of iceland — (body, education) The Home of Fjolnir.
- ventriloquist's dummy — a puppet which is operated by a ventriloquist and made to appear to talk
- xeroderma pigmentosum — a rare inherited disease characterized by sensitivity to ultraviolet light, exposure resulting in lesions and tumors of the skin and eyes.