18-letter words containing s, y, m, o
- surveyor's measure — a system of units of length used in surveying land, based on the surveyor's chain of 66 feet (20.12 meters) and its 100 links of 7.92 inches (20.12 cm).
- symbolist movement — a movement beginning in French and Belgian poetry towards the end of the 19th century with the verse of Mallarmé, Valéry, Verlaine, Rimbaud, Maeterlinck, and others, and seeking to express states of mind rather than objective reality by making use of the power of words and images to suggest as well as denote
- symmetric function — a polynomial in several indeterminates that stays the same under any permutation of the indeterminates.
- symphony orchestra — a large orchestra composed of wind, string, and percussion instruments and organized to perform symphonic compositions.
- synthetic geometry — elementary geometry, as distinct from analytic geometry.
- system-programming — a program, as an operating system, compiler, or utility program, that controls some aspect of the operation of a computer (opposed to application program).
- systematic phoneme — a phonological unit in generative phonology representing an underlying form that takes into account the relationship between phonological patterns and morphological variation, as the unit underlying the second vowel in both derive and derivative.
- systems programmer — a person whose job is to program systems software
- television company — a company that broadcasts programmes by television
- temporary hardness — hardness of water due to the presence of magnesium and calcium hydrogencarbonates, which can be precipitated as carbonates by boiling
- the movie industry — the industry that makes entertainment films or movies
- the same old story — the familiar or regular course of events
- to close your mind — If you close your mind to something, you deliberately do not think about it or pay attention to it.
- to cross your mind — If you say that an idea or possibility never crossed your mind, you mean that you did not think of it.
- to speak your mind — If you speak your mind, you say firmly and honestly what you think about a situation, even if this may offend or upset people.
- toyotomi hideyoshi — Toyotomi [taw-yaw-taw-mee] /ˈtɔ yɔˈtɔ mi/ (Show IPA), 1536–98, Japanese general and statesman: prime minister and dictator of Japan 1585–98.
- treasury of merits — the superabundant store of merits and satisfactions, comprising those of Christ, the Virgin Mary, and the saints.
- two-chamber system — the system of having two parliamentary chambers, as the House of Lords and the House of Commons in the United Kingdom
- up someone's alley — suited to someone's tastes or abilities
- video entry system — a security system whereby a person in a building can see someone who wants to gain access by means of a video image
- wesleyan methodist — a member of any of the churches founded on the evangelical principles of John Wesley.
- withdrawal symptom — effects of stopping a drug
- work-study program — a program enabling high-school or college students to combine academic work with actual job experience.
- x-ray spectrometer — a spectrometer using x-rays to activate the inner electrons of an atom in order to separate and identify the chemical constituents of a substance and their concentrations.
- x-ray spectrometry — the use of an x-ray spectrometer.
- zermelo set theory — (mathematics) A set theory with the following set of axioms: Extensionality: two sets are equal if and only if they have the same elements. Union: If U is a set, so is the union of all its elements. Pair-set: If a and b are sets, so is {a, b}. Foundation: Every set contains a set disjoint from itself. Comprehension (or Restriction): If P is a formula with one free variable and X a set then {x: x is in X and P(x)}. is a set. Infinity: There exists an infinite set. Power-set: If X is a set, so is its power set. Zermelo set theory avoids Russell's paradox by excluding sets of elements with arbitrary properties - the Comprehension axiom only allows a property to be used to select elements of an existing set.