jet (redirected from coal-black)

Jet

(Joint Engine Technology) The database engine used in Microsoft Access and that accompanies Visual Basic and C++. Jet is typically used for storing data in the client machine. Developers using Access and Visual Basic access Jet via the DAO/Jet interface, which is a COM object. See DAO.

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jet¹

1. a jet-propelled aircraft

2. Astronomy a long thin feature extending from an active galaxy and usually observed at radio wavelengths

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jet²

a. a hard black variety of coal that takes a brilliant polish and is used for jewellery, ornaments, etc.

b. (as modifier): jet earrings

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jet [jet]

(astronomy)

A narrow, elongated feature in the radio or optical map of an active galaxy, quasar, or object in the Milky Way Galaxy, believed to represent an energetic outflow of gas from a compact astronomical object.

(fluid mechanics)

A strong, well-defined stream of compressible fluid, either gas or liquid, issuing from an orifice or nozzle or moving in a contracted duct.

(particle physics)

A group of particles issuing in approximately the same direction from a high-energy collision of elementary particles, believed to consist of decay products of a member of a quark-antiquark pair created in the collision.