13-letter words containing x, s
- posix threads — (programming) (Pthreads) A POSIX standard API that defines a set of C programming language types, functions and constants for creating and manipulating pre-emptive threads. The standard's full name is "POSIX.1c, Threads extensions (IEEE Std 1003.1c-1995)". Implementations are available on many Unix-like POSIX-conformant operating systems such as FreeBSD, NetBSD, OpenBSD, GNU/Linux, Mac OS X and Solaris as well as DR-DOS and Microsoft Windows. Pthreads was designed and implemented in the PART Project (POSIX / Ada-Runtime Project).
- post exchange — a retail store on an army installation that sells goods and services to military personnel and their dependents and to certain authorized civilian personnel. Abbreviation: PX.
- pre-existence — to exist beforehand.
- prefix syntax — prefix notation
- protected sex — sexual activity during which a condom is used to protect against sexually transmitted disease and pregnancy.
- reflexiveness — Grammar. (of a verb) taking a subject and object with identical referents, as shave in I shave myself. (of a pronoun) used as an object to refer to the subject of a verb, as myself in I shave myself.
- ring exercise — any sequence of gymnastic movements carried out by a gymnast holding two rings suspended from the ceiling
- rotation axis — an imaginary line through a crystal about which the crystal may be rotated a specified number of degrees and be brought back to its original position.
- rotation-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.
- roxas y acuña — Manuel (maˈnwel). 1892–1948, Philippine statesman; first president of the Republic of the Philippines (1946–48)
- roxburghshire — a historic county in SE Scotland.
- sacral plexus — a nerve network originating from the nerves of the sacral spine and innervating large areas of the lower trunk and legs, especially via the sciatic nerves.
- saddle oxford — saddle shoe.
- saint-exupery — Antoine de [ahn-twan duh] /ɑ̃ˈtwan də/ (Show IPA), 1900–45, French author and aviator.
- saxony-anhalt — a state in central Germany. 9515 sq. mi. (24,644 sq. km). Capital: Magdeburg.
- self-existent — existing independently of any cause, as God.
- self-exposing — to lay open to danger, attack, harm, etc.: to expose soldiers to gunfire; to expose one's character to attack.
- self-exposure — the act of exposing, laying open, or uncovering: the sudden exposure of objects that were hidden under the blanket.
- semi-flexible — partially flexible; involving or possessing some flexibility
- seventy-sixth — next after the seventy-fifth; being the ordinal number for 76.
- severance tax — a tax levied by a state on the extraction and use of a natural product, as coal, that is sold outside the state or during a certain period.
- sex addiction — an addiction to sexual activity
- sex chromatin — Barr body.
- sex education — Sex education is education in schools on the subject of sexual activity and sexual relationships.
- sex selection — the practice of attempting to control the sex of a baby in order to achieve a desired sex, through various scientific methods
- sexagesimally — into sixtieths
- sexploitation — the exploitation of sex in films, magazines, etc.
- sexual health — health care and counselling related to sexual relations, reproductive health, sexually transmitted infections, etc
- sexualization — to render sexual; endow with sexual characteristics.
- shadow boxing — to make the motions of attack and defense, as in boxing, as a training or conditioning procedure.
- six-yard line — the line marking the limits of the goal area
- sixty-seventh — next after the sixty-sixth; being the ordinal number for 67.
- soapbox derby — a race between children in homemade racing carts
- soixante-neuf — sixty-nine (def 4).
- spermatotoxic — spermotoxic.
- spermatotoxin — spermotoxin.
- spiral galaxy — a galaxy having a spiral structure.
- square matrix — a matrix in which the number of rows is equal to the number of columns.
- stannic oxide — a white, amorphous, water-insoluble powder, SnO 2 , used chiefly in the manufacture of ceramic glazes and glass, and of polishing powders for metal, glass, and marble.
- start of text — (character) (STX) Mnemonic for ASCII 2.
- storax family — the plant family Styracaceae, characterized by trees and shrubs having simple, alternate leaves, clusters of bell-shaped white flowers, and fleshy or dry fruit, and including the silver bell, snowbell, and storax.
- subject index — alphabetical contents list
- sulfisoxazole — a white to yellowish, crystalline, slightly bitter sulfonamide, C 1 1 H 1 3 N 3 O 3 S, used chiefly in the treatment of infections of the urinary tract.
- tachyphylaxis — Medicine/Medical. immediate, temporary immunization against the effects of injection of a toxic extract owing to previous small injections of the same extract.
- tax inspector — a government official whose job is to make sure that people and companies are paying the right amount of tax
- tax schedules — the different ways of classifying income under tax law
- texas leaguer — a pop fly that falls safely between converging infielders and outfielders.
- texas rangers — a member of the Texas state police force or, especially formerly, of the mounted state police.
- time exposure — a long exposure in which the shutter is opened and closed by hand or by a mechanism other than the automatic mechanism of the shutter.
- toxicophagous — poison-eating