16-letter words containing i, x, t
- oxidation number — the state of an element or ion in a compound with regard to the electrons gained or lost by the element or ion in the reaction that formed the compound, expressed as a positive or negative number indicating the ionic charge of the element or ion.
- oxycalcium light — calcium light.
- phagocytic index — the average number of bacteria ingested per phagocyte in an incubated mixture of bacteria, phagocytes, and blood serum: used in determining the opsonic index.
- postfix notation — (language) (Or "Reverse Polish Notation", RPN) One of the possible orderings of functions and operands: in postfix notation the functions are preceded by all their operands. For example, what may normally be written as "1+2" becomes "1 2 +". Postfix notation is well suited for stack based architectures but modern compilers reduced this advantage considerably. The best-known language with postfix syntax is FORTH. Some Hewlett-Packard calculators use it, e.g. HP-25, HP-29C, HP-41C, HP-23SII. Compare: infix notation, prefix notation.
- presentation box — a specially designed and attractive box to hold a product, and make it look more impressive
- prevost d'exiles — Antoine François [ahn-twan frahn-swa] /ɑ̃ˈtwan frɑ̃ˈswa/ (Show IPA), ("Abbé Prévost") 1697–1763, French novelist.
- proxima centauri — the nearest star to the sun at a distance of 4.3 light-years, part of the Alpha Centauri triple-star system located in the constellation Centaurus.
- proxime accessit — the person coming next after the winner in a competitive examination or an academic prize giving; runner-up
- radiant exitance — the ability of a surface to emit radiation expressed as the radiant flux emitted per unit area at a specified point on the surface
- recreational sex — sex for the purpose of pleasure rather than reproduction, without the commitment of a relationship
- refractive index — index of refraction.
- relative maximum — maximum (def 4a).
- relative-maximum — maximum (def 4a).
- rich text format — (RTF) An interchange format from Microsoft for exchange of documents between Word and other document preparation systems.
- rotation of axes — a process of replacing the axes in a Cartesian coordinate system with a new set of axes making a specified angle with and having the same origin as the original axes.
- russian orthodox — of or relating to the Russian Orthodox Church
- safe deposit box — A safe deposit box is a small box, usually kept in a special room in a bank, in which you can store valuable objects.
- safe-deposit box — a lockable metal box or drawer, especially in a bank vault, used for safely storing valuable papers, jewelry, etc.
- saxo grammaticus — c1150–1206? Danish historian and poet.
- self-examination — examination into one's own state, conduct, motives, etc.
- self-explication — the act of explicating.
- senior executive — someone in a senior position in a business, who makes decisions and puts them into action
- sexual deviation — a type of mental disorder characterized by a preference for or obsession with unusual sexual practices, as pedophilia, sadomasochism, or exhibitionism.
- sexual relations — sexual intercourse; coitus.
- sexual selection — a special type of natural selection in which the sexes acquire distinct forms either because the members of one sex choose mates with particular features or because in the competition for mates among the members of one sex only those with certain traits succeed.
- simple extension — an extension field of a given field, obtained by forming all polynomials in a specified element with coefficients contained in the given field.
- sulphur trioxide — a white corrosive substance existing in three crystalline forms of which the stable (alpha-) form is usually obtained as silky needles. It is produced by the oxidation of sulphur dioxide, and is used in the sulphonation of organic compounds. Formula: SO3
- swinging sixties — the 1960s as a decade when social and sexual freedom increased
- symmetric matrix — a matrix with the lower-left half equal to the mirror image of the upper-right half; a matrix that is its own transpose.
- tax depreciation — Tax depreciation is depreciation in a company's internal financial records that is different from the amount that is used for the internal books.
- texas revolution — a revolutionary movement, 1832–36, in which U.S. settlers asserted their independence from Mexico and established the republic of Texas.
- texture modifier — a substance that is added to food products to increase viscosity
- the opposite sex — women in relation to men or men in relation to women
- the sex industry — a commercial sector that employs sex workers in prostitution, pornography, etc.
- the-little-foxes — a play (1939) by Lillian Hellman.
- titanium dioxide — a white, water-insoluble powder, TiO 2 , used chiefly in white pigments, plastics, ceramics, and for delustering synthetic fibers.
- triple-expansion — noting a power source, especially a steam engine, using the same fluid at three successive stages of expansion to do work in three or more cylinders.
- tuxtla gutierrez — a state in S Mexico. 28,732 sq. mi. (74,415 sq. km). Capital: Tuxtla Gutiérrez.
- twin-lens reflex — See under reflex camera. Abbreviation: TLR.
- uranium trioxide — a radioactive orange powder, UO 3 , used in the manufacture of some ceramics.
- volatility index — beta (def 6).
- win the exchange — to win a rook in return for a bishop or knight
- world exposition — world's fair.
- x-ray technician — a technician who specializes in taking and processing x-rays, especially in a hospital or clinic.
- xaverian brother — a member of a congregation of Roman Catholic laymen bound by simple vows and dedicated to education.