17-letter words containing s, t, r, a
- astronomical year — year (def 4b).
- astrophotographer — A person, especially an astronomer, who takes photographs of the stars.
- asymmetrical bars — a set of parallel bars, having one bar fixed at 230 cm (7 ft, 6 in) and the other at 150 cm (4 ft, 11 in), used by women gymnasts
- at close quarters — If you do something at close quarters, you do it very near to a particular person or thing.
- at cross purposes — an opposing or contrary purpose.
- at cross-purposes — If people are at cross-purposes, they do not understand each other because they are working towards or talking about different things without realizing it.
- at one's own risk — If you tell someone that they are doing something at their own risk, you are warning them that, if they are harmed, it will be their own responsibility.
- at swords' points — ready to quarrel or fight
- at the request of — in accordance with the specific demand or wish of (someone)
- at the service of — To be at the service of a person or organization means to be available to help or be used by that person or organization.
- attorneys-in-fact — a person authorized by power of attorney to act on the authorizer's behalf outside a court of law.
- attraction sphere — centrosphere (sense 1)
- audio description — a facility provided for visually impaired people in which a film, television programme, or play is described through audio technology
- aurea mediocritas — the golden mean.
- australia antigen — an antigen present in the blood of some persons with one form of hepatitis
- australia current — a branch of the South Equatorial Current flowing SW from around Fiji to the E coast of Australia and then S along the coast.
- australian ballot — an official ballot listing candidates for election to public office and issues, levies, etc., distributed inside the polling place to be marked by the voter in secret: it originated in Australia and is widely used in the U.S.
- australian kelpie — one of an Australian breed of medium-sized sheepherding dogs having a short, harsh, straight coat in a combination of colors that can include black, red, tan, fawn, chocolate, or smoke blue, probably developed by crossbreeding between the border collie and dingo.
- australian salute — a movement of the hand and arm made to brush flies away from one's face
- australopithecine — any of various extinct apelike primates of the genus Australopithecus and related genera, remains of which have been discovered in southern and E Africa. Some species are estimated to be over 4.5 million years old
- authoritativeness — having due authority; having the sanction or weight of authority: an authoritative opinion.
- auxiliary storage — secondary storage.
- average seek time — (storage) The mean time it takes to move the head of a disk drive from one track to another, averaged over the source and destination cylinders. Usually measured in milliseconds (ms). The average seek time gives a good measure of the speed of the drive in a multi-user environment where successive read/write request are largely uncorrelated. Ten ms is common for a hard disk and 200 ms for an eight-speed CD-ROM.
- aviation industry — a collective term for the companies involved in air transport
- avogadro constant — the number of atoms or molecules in a mole of a substance
- axis of ordinates — y-axis (def 1).
- axis-of-ordinates — y-axis (def 1).
- bachelor's button — any of several plants of a genus (Centaurea) of the composite family, that have scaly, vase-shaped bracts below the white, pink, or blue flowers; esp., the cornflower and knapweed
- bachelor's-button — any of various plants with round flower heads, especially the cornflower.
- back on the rails — If something is back on the rails, it is beginning to be successful again after a period when it almost failed.
- bacteriorhodopsin — a purple protein containing retinal and found in the plasma membrane of certain bacteria (genus Halobacterium): it directly supplies electrochemical energy from sunlight
- bankruptcy estate — all of the interests that a debtor has at the start of a bankruptcy case
- barchester towers — a novel (1857) by Anthony Trollope.
- barkhausen effect — the phenomenon of short, sudden changes in the magnetism of a ferromagnetic substance occurring when the intensity of the magnetizing field is continuously altered.
- barmecide (feast) — a pretended feast with no food
- barrel distortion — distortion of an image produced by an optical system that causes straight lines at image margins to bulge outwards
- barren strawberry — a Eurasian plant, Potentilla sterilis, related to the strawberry that does not produce edible fruit
- bartholin's gland — either of two small glands near the vaginal opening: during sexual excitement they secrete a mucous lubricating substance
- base lending rate — a minimum interest rate on which financial institutions base the rates they use for lending
- base rate fallacy — the tendency, when making judgments of the probability with which an event will occur, to ignore the base rate and to concentrate on other information
- baseboard heating — a heating system by pipes, through which steam or hot water circulates, near the base of the walls of rooms
- basement membrane — a thin, extracellular membrane underlying epithelial tissue.
- basic proposition — protocol (def 6).
- basic service set — (networking) (BSS) A wireless local area network and all the wireless devices (e.g. PCs and laptops) that are associated with it. A BSS may or may not include an access point and is identified by a BSSID.
- basketball player — someone who plays basketball
- bathroom fittings — plumbing fixtures or accessories suitable for use in a bathroom
- beat a dead horse — to argue an issue that is already settled
- beat one's brains — to try hard to remember, understand, or solve something
- beat one's breast — to display guilt and remorse publicly or ostentatiously
- bed and breakfast — Bed and breakfast is a system of accommodation in a hotel or guest house, in which you pay for a room for the night and for breakfast the following morning. The abbreviation B&B is also used.