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flat

1. Chiefly Brit
a. (of races, racetracks, or racecourses) not having obstacles to be jumped
b. of, relating to, or connected with flat racing as opposed to steeplechasing and hurdling
2. (of trade, business, a market, etc.) commercially inactive; sluggish
3. (of a print, photograph, or painting) lacking contrast or shading between tones
4. (of a painting) lacking perspective
5. Music
a. denoting a note of a given letter name (or the sound it represents) that has been lowered in pitch by one chromatic semitone
b. (of an instrument, voice, etc.) out of tune by being too low in pitch
6. a low-lying tract of land, esp a marsh or swamp
7. a mud bank exposed at low tide
8. Music
a. an accidental that lowers the pitch of the following note by one chromatic semitone.
b. a note affected by this accidental
9. Theatre a rectangular wooden frame covered with painted canvas, etc., used to form part of a stage setting
10. often cap; preceded by the Chiefly Brit
a. flat racing, esp as opposed to steeplechasing and hurdling
b. the season of flat racing
11. Nautical a flatboat or lighter
12. US and Canadian a shallow box or container, used for holding plants, growing seedlings, etc.

flat

[flat]
(acoustics)
A musical note that is a half step lower than a specified note.
(engineering)
A nonglossy painted surface.
(geography)
A level tract of land.
(geology)
(graphic arts)
The sheet of glass on which negative films are placed close together for printing on sensitized metal in the photoengraving process.
An assemblage of negative or positive films used in preparing a photo-offset plate.
(mineralogy)
An inferior grade of rough diamonds.
(navigation)
A place covered with water too shallow for ordinary navigation.
The area between high- and low-water marks along the edge of an arm of the sea, a bay, or tidal river; the term is usually used in the plural.
(naval architecture)
A partial deck below the main deck, constructed without any camber.
(science and technology)
A smooth, even surface.
An object with a broad, shallow or thin form.

flat

1. Descriptive of a roof, etc., having little or no slope.
2. One floor of a multistory building or a dwelling unit on one floor.
3. Descriptive of paint having very low gloss.
4. A piece of framed stage scenery without thickness other than its framing members.
5. A metal bar having a rectangular cross section; if fabricated of steel, must have a minimum thickness of 0.203 in. (0.516 cm) and a maximum width of 8 in. (20.3 cm).

flat

(1)
Lacking any complex internal structure. "That bitty box has only a flat file system, not a hierarchical one." The verb form is flatten. Usually used pejoratively (at least with respect to file systems).

flat

(2)
Said of a memory architecture like that of the VAX or Motorola 680x0 that is one big linear address space (typically with each possible value of a processor register corresponding to a unique address). This is a Good Thing. The opposite is a "segmented" architecture like that of the Intel 80x86 in which addresses are composed from a base-register/offset pair. Segmented designs are generally considered cretinous.

flat

(3)
A flat domain is one where all elements except bottom are incomparable (equally well defined). E.g. the integers.

flat

(1) An appearance that is not sculpted or shaded. See flat UI.

(2) Structures that are not hierarchical; for example, a list of items. Flat also refers to structures that do not contain explicit pointers to other structures. See flat file and flat address space. See also flat screen.
References in periodicals archive ?
The CHA is] not going to get [$1,175] a month," Whitfield said, referring to the flat rents for one-bedroom units at the Harold Ickes Homes after they are rehabbed this winter.
The dependence of hysteresis on the flat preparation was also very important.
What makes this split particularly frustrating is that the flat tax and sales tax are virtually identical.
The flat and consumption taxes are criticized for regressivity.
The national debate over the flat tax is only beginning.
In 1993, an AICPA task force began a study of tax reform alternatives, including the flat tax, value added tax, national sales tax and consumer income tax, with the goal of recommending a policy position.
But on Monday, the highest bid the agency received was ` 24,137 per sqft ( for the flat bought by the Delhi State Corporation Bank).
If there is no #2 receiver, the hook-to-curl player will drop to the hook and the curl-to-flat player will drop to the curl, unless the flat is attacked by the #1 receiver or a crossing receiver.
Expected growth in the flat belt industry was once again predicated on the same market sectors responsible for growth in the past two years.
The problem is - and this is where the civil libertarian aspect comes in - that the flat tax remains a tax on income and keeps in place the Internal Revenue Service.