- The definition of a window is a pane of glass or plastic in a house, car or other structure, or something you look through, either literally or metaphorically, to see what is on the other side.
- An example of a window is the glass on the front or back of your house that allows you to look out.
- An example of a window is the eyes, which are said to be windows to the soul because looking into someone's eyes helps you to understand the person.
Windows looking out to a lovely garden.
window definition by Webster's New World
- an opening in a building, vehicle, or container, for letting in light or air or for looking through, usually having a pane or panes of glass, etc. set in a frame or sash that is generally movable so that it can be opened and shut
- any of these panes, or the sash or sashes in their casement
- any similar opening, as that before a bank teller
- an opening, period of time, etc. for access: window of opportunity
- the transparent panel of a window envelope
- any device put into the atmosphere to yield a perceptible radar echo, usually used for tracking an airborne object or as a tracer of wind
- chaff ()
- launch window
- any portion of the frequency spectrum of the earth's atmosphere through which light, heat, or radio waves can penetrate to the earth's surface due to the low absorption or dissipation of electromagnetic energy in this particular portion
- Comput. any of the separate data displays appearing simultaneously on a single video screen in certain systems
Origin: Middle English windoge ; from Old Norse vindauga, window, literally , wind eye ; from vindr, wind plush auga, an eye; akin to German auge, eye
- windowless adjective
window definition by American Heritage Dictionary
- a. An opening constructed in a wall or roof that functions to admit light or air to an enclosure and is often framed and spanned with glass mounted to permit opening and closing.b. A framework enclosing a pane of glass for such an opening; a sash.c. A pane of glass or similar material enclosed in such a framework.
- a. An opening that resembles a window in function or appearance.b. The transparent panel on a window envelope.
- The area or space immediately behind a window, especially at the front of a shop.
- A means of access or observation: St. Petersburg was Peter the Great's window onto the Baltic.
- An interval of time during which an activity can or must take place: a brief window of opportunity for a space mission; a window of vulnerability during which the air force was subject to attack.
- Strips of foil dropped from an aircraft to confuse enemy radar; chaff.
- A range of electromagnetic frequencies that pass unobstructed through a planetary atmosphere.
- Computer Science A rectangular area on the screen that displays its own file or message independently of the other areas of the screen.
- Aerospace a. A launch window.b. An area at the outer limits of the earth's atmosphere through which a spacecraft must pass in order to return safely.
Origin: Middle English, from Old Norse vindauga : vindr, air, wind; see wē- in Indo-European roots + auga, eye; see okw- in Indo-European roots.Word History: The source of our word window is a vivid metaphor. Window comes to us from the Scandinavian invaders and settlers of England in the early Middle Ages. Although we have no record of the exact word they gave us, it was related to Old Norse vindauga, “window,” a compound made up of vindr, “wind,” and auga, “eye,” reflecting the fact that at one time windows contained no glass. The metaphor “wind eye” is of a type beloved by Norse and Old English poets and is called a kenning; other examples include oar-steed for “ship” and whale-road for “sea.” Recently we have restored to the 800-year-old word window a touch of its poetic heritage, using it figuratively in such phrases as launch window, weather window, and window of opportunity or vulnerability.
window - Business Definition
- A period of time during which an action can be expected to generate a successful result. For example, underwriters may have a window for corporate debt issues sandwiched between two periods of heavy U.S. Treasury offerings.
- See discount window.
window - Computer Definition
- An opening or opportunity for passage of data frames or packets without the requirement for an acknowledgement from the receiving device. See modulo and TCP.
- An opening or opportunity for passage of a range of wavelengths in a fiber optic transmission system (FOTS). For example, a laser diode might fire at 1550 nm, referring to a range of wavelengths with a nominal center point of 1550 nm. A light-emitting diode (LED) might fire at 850 nm, and a vertical cavity surface-emitting laser (VCSEL) at 1300 nm or 1310 nm. The ITU-T has established a number of standard windows, as detailed in Table W-1. Generally speaking, the higher the transmission window (i.e., the longer the wavelength and lower the frequency), the less the signal attenuation, but the more expensive the associated electronics. See also attenuation, FOTS, frequency, laser diode, LED, VCSEL, and wavelength. Table W-1: ITU-T Transmission Windows
Band Designation Wavelength Window 850 Band 810â€“890 nm O-Band (Original Band) 1,260 nm1,360 nm E-Band (Extended Band) 1,360 nm1,460 nm S-Band (Short Wavelength Band) 1,460 nmâ€“1,530 nm C-Band (Conventional Band) 1,530 nmâ€“1,565 nm L-Band (Long Wavelength Band) 1,565 nmâ€“1,625 nm U-Band (Ultralong Wavelength Band) 1,625 nmâ€“1,675 nm
(1) A time period. For example, a "window of opportunity" implies a favorable time.
(2) Sometimes refers to a reserved area of memory.
(3) A viewing area on screen that contains a surrounding frame (border). It is used to separate parts of an application from each other and to separate one application from another. Mostly rectangular, windows can also be round and multi-sided. If there is more data than the window can hold at one time, the window contains a scroll bar that allows the user to reach the additional content. Windows were first used in the late 1960s at Stanford Research Laboratories (SRI). See dialog box, scroll bar, splash screen and GUI. See also Windows.
window - Investment & Finance Definition
window - Medical Definition