17-letter words starting with si
- sickle cell trait — the usually asymptomatic hereditary condition that occurs when a person inherits from only one parent the abnormal hemoglobin gene characteristic of sickle cell anemia.
- side-valve engine — a type of internal-combustion engine in which the inlet and exhaust valves are in the cylinder block at the side of the pistons
- sidesaddle flower — a pitcher plant, Sarracenia purpurea.
- sidewall sampling — Sidewall sampling is the process of taking a sample from the wall of the borehole.
- sign in (or out) — to sign a register on arrival (or departure)
- sign of the cross — a movement of the hand to indicate a cross, as from forehead to breast and left shoulder to right or, in the Eastern Orthodox Church, from right shoulder to left.
- signed and sealed — If you say that an agreement is signed and sealed, or signed, sealed and delivered, you mean that it is absolutely definite because everyone involved has signed all the legal documents.
- significance test — (in hypothesis testing) a test of whether the alternative hypothesis achieves the predetermined significance level in order to be accepted in preference to the null hypothesis
- significant other — Sociology. a person, as a parent or peer, who has great influence on one's behavior and self-esteem.
- silent revolution — a social or political revolution that takes place with little warning and without great fuss or unrest
- silicon rectifier — a rectifier consisting of a semiconductor diode using crystalline silicon
- silk manufacturer — a person or business that is involved in the manufacture of silk thread and fabric
- silk-screen print — a type of print made with a stencil and a fine mesh screen. Ink is applied to and forced through the small holes in the screen leaving the covered area free from ink
- silver collection — a collection that consists of silver coins that is made at a meeting etc
- silver star medal — a U.S. military decoration in the form of a bronze star with a small silver star at the center, awarded for gallantry in action
- similar triangles — triangles that are similar due to the equality of corresponding angles and the proportional similarity of the corresponding sides
- simple microscope — a microscope having a single lens.
- simplicity itself — If you say that something is simplicity itself, you are emphasizing that it is very simple or easy.
- simulated leather — fake leather that is an imitation of real leather and is usually made from a cheaper material
- sinbad the sailor — a merchant in The Arabian Nights who makes seven adventurous voyages
- sinclair research — (company) A British microelectronics developer and manufacturer. Evolving from Sinclair Radionics in 1979, Sinclair Research was owned by Sir Clive Sinclair. Sinclair Radionics produced electronic components and devices (such as calculators and pocket radios and televisions), but Sinclair Research began by producing some of the first 8-bit home microcomputers. Sinclair produced five microcomputers from 1980 to 1987, all based on the Zilog Z80 microprocessor (except for the QL, which used the Motorola 68008 - a variant on the 68000). The 1K kit-build ZX80, introduced in 1980, was followed by the 1K ZX81 (expandable to 16K) in 1981, the 16K (expandable to 48K) ZX Spectrum in 1982 (then superseded by two distinct 48K models and a 128K model in 1986) and the QL (Quantum Leap) in 1984. A portable laptop computer, the Z88, was released in 1987 under the Cambridge Computers banner. Of them all, the ZX Spectrum was the best known, and it went on to become the most popular microcomputer of its time in the United Kingdom and in many other territories. This was partly due to its ease of use, and also due to its enormous software catalogue, covering games, word processing, music, programming and graphics. Glorious "mine's-better-than-yours" battles were fought (and still are today) between owners of Spectrums and Commodore 64s over who had the best machine. Sir Clive's financial problems in the mid-80s led him to sell the rights to the Sinclair brand to Amstrad in April 1986. This led to further models of the Spectrum being released from 1986 to 1988 and also an IBM PC-compatible based internally on Amstrad's own PC range. Sir Clive was not involved with the production of these computers, and no computer with the Sinclair name has been produced since.
- singer-songwriter — A singer-songwriter is someone who writes and performs their own songs, especially popular songs.
- single supplement — A single supplement is an additional sum of money that a hotel charges for one person to stay in a room meant for two people.
- single-name paper — commercial paper bearing only the signature of the maker.
- single-sheet feed — a mechanism for feeding or taking single sheets of paper into a printer
- single-sided disk — a disk that used only one side for recording data
- single-track road — a road that is only wide enough for one vehicle
- sino-japanese war — the war (1894–95) between China and Japan over the control of Korea that resulted in the nominal independence of Korea and the Chinese cession to Japan of Formosa and the Pescadores.
- sinus of valsalva — any of the pouches of the aorta and the pulmonary artery opposite the flaps of the semilunar valves into which blood returning to the heart flows, closing the valves.
- sir arthur harden — Sir Arthur, 1865–1940, English biochemist: Nobel Prize 1929.
- sister of charity — a member of one of several congregations of sisters founded in 1634 by St. Vincent de Paul.
- sister of loretto — a member of a congregation of sisters founded at Loretto, Kentucky, in 1812 and engaged in educational and missionary works.
- situational irony — irony involving a situation in which actions have an effect that is opposite from what was intended, so that the outcome is contrary to what was expected.
- situations vacant — Situations Vacant is the title of a column or page in a newspaper where jobs are advertised.
- six o'clock swill — a period of heavy drinking, esp during the years when hotels had to close their bars at 6.00 p.m.
- six-speed gearbox — a gearbox containing a system of six gears
- sixth commandment — “Thou shalt not kill”: sixth of the Ten Commandments.
- sixty-fourth note — a note having one sixty-fourth of the time value of a whole note; hemidemisemiquaver.
- sixty-fourth rest — a rest equal in time value to a sixty-fourth note.
On this page, we collect all 17-letter words starting with SI. It’s easy to find right word with a certain length. It is the easiest way to find 17-letter word that beginning with SI to use in Scrabble or Crossword puzzles.