13-letter words containing a, r, x, e
- oxford accent — the accent associated with Oxford English
- parasexuality — parasexual behaviour
- part exchange — If you give an old item in part exchange for something you are buying, the seller accepts the old item as part of the payment, so you do not have to give them as much money.
- 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).
- practice exam — an informal examination taken as a preparation for an actual or formal examination
- praxeological — of or pertaining to praxeology
- preexcitation — the act of exciting.
- prefix syntax — prefix notation
- primary xylem — xylem derived directly from the growth of an apical meristem.
- proparoxytone — having an accent or heavy stress on the antepenultimate syllable.
- proxy gateway — proxy server
- reexamination — further study or inspection
- reflex camera — a camera in which the image appears on a ground-glass viewer (focusing screen) after being reflected by a mirror or after passing through a prism or semitransparent glass; in one type (single-lens reflex camera) light passes through the same lens to both the ground glass and the film, while in another type (twin-lens reflex camera) light passes through one lens (viewing lens) to the ground glass and through a second lens (taking lens) to the film, the lenses being mechanically coupled for focusing.
- reflex-action — Physiology. noting or pertaining to an involuntary response to a stimulus, the nerve impulse from a receptor being transmitted inward to a nerve center that in turn transmits it outward to an effector.
- 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.
- 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.
- 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 chromatin — Barr body.
- six-yard line — the line marking the limits of the goal area
- soapbox derby — a race between children in homemade racing carts
- spermatotoxic — spermotoxic.
- spermatotoxin — spermotoxin.
- square matrix — a matrix in which the number of rows is equal to the number of columns.
- start of text — (character) (STX) Mnemonic for ASCII 2.
- tax collector — sb employed to gather taxes
- tax inspector — a government official whose job is to make sure that people and companies are paying the right amount of tax
- 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.
- texture paint — a finish paint having an insoluble additive, as sand, for giving a slightly rough textural effect.
- unexaggerated — not exaggerated or overblown
- unexplanatory — serving to explain: an explanatory footnote.
- unextractable — to get, pull, or draw out, usually with special effort, skill, or force: to extract a tooth.
- uranium oxide — any of the compounds of uranium and oxygen, as UO 2 , UO 3 , U 4 O 9 , or U 3 O 8 .
- visual cortex — the portion of the cerebral cortex of the brain that receives and processes impulses from the optic nerves.
- x-certificate — a film classification indicating a film that may not be publicly shown to anyone under 18. Since 1982 replaced by symbol 18
- x-ray burster — a celestial source from which bursts of x-rays are received.
- x-ray therapy — treatment of a disease using controlled quantities of x-rays.
- xerophthalmia — abnormal dryness of the eyeball characterized by conjunctivitis, caused by a deficiency of tears and attributed to a lack of vitamin A.
- xerophthalmic — Of or pertaining to xerophthalmia.
- yeast extract — food ingredient obtained from yeast
- zoopraxiscope — an early type of motion-picture projector, designed by Eadweard Muybridge, in which the images were drawings or photographs placed along the rim of a circular glass plate, the shutter was a rotating opaque disk with radial slots, and a limelight source was used.