18-letter words containing si
- absolute viscosity — a full name for viscosity, used to distinguish it from kinematic viscosity and specific viscosity
- addressing machine — a printer that prints addresses directly on to letters, labels, and envelopes
- adverse possession — the occupation or possession of land by a person not legally entitled to it. If continued unopposed for a period specifed by law, such occupation extinguishes the title of the rightful owner
- advertising agency — An advertising agency is a company whose business is to create advertisements for other companies or organizations.
- ailanthus silkworm — a green silkworm, Samia walkeri, introduced into the U.S. from China, that feeds on the leaves of the ailanthus.
- air-to-air missile — a missile fired from an aircraft that targets other aircraft in flight
- air-to-sea missile — a missile fired from an aircraft that has a target on the sea
- angiotensinogenase — (enzyme) renin.
- angular dispersion — a measure of the angular separation of light rays of different wavelength or color traversing a prism or diffraction grating, equal to the rate of change of the angle of deviation with respect to the change in wavelength.
- ansi minimal basic — (language, standard) ANS X3.60-1978.
- anthropomorphising — Present participle of anthropomorphise.
- aperture synthesis — an array of radio telescopes used in radio astronomy to simulate a single large-aperture telescope. Some such instruments use movable dishes while others use fixed dishes
- appellate division — the section of a court that hears appeals, sometimes existing as an intermediate court between a trial court and a court of last resort.
- as far as possible — to the greatest possible extent
- asiatic black bear — a bear, Selenarctos thibetanus, of central and E Asia, whose coat is black with a pale V-shaped mark on the chest
- assignment problem — (mathematics, algorithm) (Or "linear assignment") Any problem involving minimising the sum of C(a, b) over a set P of pairs (a, b) where a is an element of some set A and b is an element of set B, and C is some function, under constraints such as "each element of A must appear exactly once in P" or similarly for B, or both. For example, the a's could be workers and the b's projects. The problem is "linear" because the "cost function" C() depends only on the particular pairing (a, b) and is independent of all other pairings.
- authorized version — the revised English translation of the Bible published in England in 1611 with the authorization of King James I
- benchmark position — a public service job used for comparison with a similar position, such as a position in commerce, for wage settlements
- biodiversification — the process by which the diversity of plants or animals develops or is increased within a particular region or group of organisms.
- bipolar transistor — (electronics) A transistor made from a sandwich of n- and p-type semiconductor material: either npn or pnp. The middle section is known as the "base" and the other two as the "collector" and "emitter". When used as an amplifying element, the base to emitter junction is in a "forward-biased" (conducting) condition, and the base to collector junction is "reverse-biased" or non-conducting. Small changes in the base to emitter current (the input signal) cause either holes (for pnp devices) or free electrons (for npn) to enter the base from the emitter. The attracting voltage of the collector causes the majority of these charges to cross into and be collected by the collector, resulting in amplification. Contrast field effect transistor.
- borosilicate glass — any of a range of heat- and chemical-resistant glasses, such as Pyrex, prepared by fusing together boron(III) oxide, silicon dioxide, and, usually, a metal oxide
- break your silence — If someone breaks their silence about something, they talk about something that they have not talked about before or for a long time.
- bronchocandidiasis — See under candidiasis.
- business education — education for general knowledge of business practices.
- butler's sideboard — a sideboard, often with a fall front, having on its top a china cabinet with glazed doors.
- california fuchsia — a North American onagraceous plant, Zauschneria californica, with tubular scarlet flowers
- california-fuchsia — a plant belonging to the genus Fuchsia, of the evening primrose family, including many varieties cultivated for their handsome drooping flowers.
- cassini's division — the gap that divides Saturn's rings into two parts, discovered by Giovanni Domenico Cassini (1625–1712) in 1675
- cassiopeia's chair — the five brightest stars in the constellation Cassiopeia that seem to form the shape of a W or M
- cassius (longinus) — (Gaius)died 42 b.c.; Rom. general & conspirator against Caesar
- catherine of siena — Saint. 1347–80, Italian mystic and ascetic; patron saint of the Dominican order. Feast day: April 29
- causa sine qua non — an indispensable condition; requisite.
- chord of the sixth — sixth chord.
- classical armenian — the oldest form of the Armenian language according to written sources, in use from the 5th to the 18th century.
- classical sanskrit — Sanskrit of an ancient period earlier than that of the Prakrits and later than Vedic.
- classified section — the part of a publication that contains classified advertising
- closure conversion — (theory) The transformation of continuation passing style code so that the only free variables of functions are names of other functions. See also Lambda lifting.
- coccidioidomycosis — a disease of the skin or viscera, esp the lungs, caused by infection with the fungus Coccidioides immitis
- coffee-table music — unadventurous music
- collision coverage — Collision coverage is insurance cover for vehicle accidents.
- collision diameter — the distance between the centers of two colliding molecules when at their closest point of approach.
- compassion fatigue — the inability to react sympathetically to a crisis, disaster, etc, because of overexposure to previous crises, disasters, etc
- compassionlessness — The quality, state, or condition of being compassionless; uncompassion.
- composite function — a function obtained from two given functions, where the range of one function is contained in the domain of the second function, by assigning to an element in the domain of the first function that element in the range of the second function whose inverse image is the image of the element.
- composition rubber — manufactured rubber
- composition series — a normal series of subgroups in which no additional subgroups can be inserted.
- comprehensibleness — The quality of being comprehensible; comprehensibility.
- compression stroke — The compression stroke is the stroke in an engine in which the air or air/fuel mixture is compressed before ignition.
- concussion grenade — a grenade designed to inflict damage by the force of its detonation rather than by the fragmentation of its casing.
- congregate housing — a type of housing in which each individual or family has a private bedroom or living quarters but shares with other residents a common dining room, recreational room, or other facilities.
On this page, we collect all 18-letter words with SI. It’s easy to find right word with a certain length. It is the easiest way to find 18-letter word that contains SI to use in Scrabble or Crossword puzzles.