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Term entries in the full glossary starting with the letter "G"

W3C Glossaries

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gamma

From Portable Network Graphics (PNG) Specification (Second Edition) (2003-11-10) | Glossary for this source

exponent that describes approximations to certain non-linear transfer functions encountered in image capture and reproduction. Within this International Standard, gamma is the exponent in the transfer function from display_output to image_sample
image_sample = display_outputgamma
where both display_output and image_sample are scaled to the range 0 to 1.
gateway

From Web Characterization Terminology & Definitions Sheet (1999-05-24) | Glossary for this source

A gateway is an intermediary which acts as a server on behalf of some other server with the purpose of supplying resources or resource manifestations from that other server. Clients using a gateway know the gateway is present but does not know that it is an intermediary.

gateway

From Composite Capability/Preference Profiles (CC/PP): Structure and Vocabularies 1.0 (2004-01-15) | Glossary for this source

Software that is capable of bridging disparate network protocols. For the purposes of this specification, "gateway" refers to protocol bridging functionality, which may exist in a stand-alone gateway or may be co-located with a proxy or origin server.
gateway

From Glossary of Terms for Device Independence (2005-01-18) | Glossary for this source

A gateway is an intermediary which acts as a server on behalf of some other server with the purpose of supplying resources or resource manifestations from that other server. Clients using a gateway know the gateway is present but do not know that it is an intermediary.
This term was taken verbatim from Web Characterization Terminology & Definitions Sheet.
gateway

From Web Services Glossary (2004-02-11) | Glossary for this source

An agent that terminates a message on an inbound interface with the intent of presenting it through an outbound interface as a new message. Unlike a proxy, a gateway receives messages as if it were the final receiver for the message. Due to possible mismatches between the inbound and outbound interfaces, a message may be modified and may have some or all of its meaning lost during the conversion process. For example, an HTTP PUT has no equivalent in SMTP.

Note: a gateway may or may not be a SOAP node; however a gateway is never a SOAP intermediary, since gateways terminate messages and SOAP intermediaries relay them instead. Being a gateway is typically a permanent role, whilst being a SOAP intermediary is message specific.

gateway

From Hypertext Transfer Protocol -- HTTP/1.1 (1999-06-15) | Glossary for this source

A server which acts as an intermediary for some other server. Unlike a proxy, a gateway receives requests as if it were the origin server for the requested resource; the requesting client may not be aware that it is communicating with a gateway.
general entities

From Extensible Markup Language (XML) 1.1 (2004-02-04) | Glossary for this source

General entities are entities for use within the document content. In this specification, general entities are sometimes referred to with the unqualified term entity when this leads to no ambiguity.
general entities

From Extensible Markup Language (XML) 1.0 (2000-10-06) | Glossary for this source

General entities are entities for use within the document content. In this specification, general entities are sometimes referred to with the unqualified term entity when this leads to no ambiguity.
generic identifier

From Modularization of XHTML (2001-04-10) | Glossary for this source

the name identifying the element type of an element. Also, element type name.
GIF (Graphics interchange format)

From Glossary of "Weaving the Web" (1999-07-23) | Glossary for this source

A format for pictures transmitted pixel by pixel over the Net. Created by CompuServe, the GIF specification was put into the public domain, but Unisys found that it had a patent on the compression technology used. This stimulated the development of PNG.
GILC (Global internet liberty campaign)

From Glossary of "Weaving the Web" (1999-07-23) | Glossary for this source

A group that has been laudably vocal in support of individual rights on the Net (though occasionally tending to throw out the baby with the bathwater).
global variable

From XSL Transformations (XSLT) 2.0 (2007-01-23) | Glossary for this source

A top-level variable-binding element declares a global variable that is visible everywhere (except where it is shadowed by another binding).
glossary of terms for device independence (version used forDevice

From Glossary of Terms for Device Independence (2005-01-18) | Glossary for this source

Glossary of Terms for Device Independence , Rhys Lewis, 2003. W3C Working Draft available at: http://www.w3.org/TR/2003/WD-di-gloss-20030825/
glyph

From Mathematical Markup Language (MathML) Version 2.0 (2001-02-21) | Glossary for this source

The actual shape (bit pattern, outline) of a character. ISO/IEC Standard 9541-1:1991 defines a glyph as a recognizable abstract graphic symbol that is independent of any specific design.
good practice

From Architecture of the World Wide Web, Volume One (2004-12-15) | Glossary for this source

Good practice—by software developers, content authors, site managers, users, and specification designers—increases the value of the Web.
graphical

From User Agent Accessibility Guidelines 1.0 (2002-12-17) | Glossary for this source

In this document, the term "graphical" refers to information (including text, colors, graphics, images, and animations) rendered for visual consumption.
graphics

From Glossary of "Weaving the Web" (1999-07-23) | Glossary for this source

Two- or three-dimensional images, typically drawings or photographs. See also GIF , PNG , SVG , and VRML .
greyscale

From Portable Network Graphics (PNG) Specification (Second Edition) (2003-11-10) | Glossary for this source

image representation in which each pixel is defined by a single sample of colour information, representing overall luminance (on a scale from black to white), and optionally an alpha sample (in which case it is called greyscale with alpha).
group ruby

From Ruby Annotation (2001-05-31) | Glossary for this source

In Japanese typography: Ruby text associated with more than one character of the base text.
grouping keys

From XSL Transformations (XSLT) 2.0 (2007-01-23) | Glossary for this source

If either of the group-by attribute or group-adjacent attributes is present, then grouping keys are calculated for each item in the population. The grouping keys are the items in the sequence obtained by evaluating the expression contained in the group-by attribute or group-adjacent attribute, atomizing the result, and then casting an xs:untypedAtomic value to xs:string.

The Glossary System has been built by Pierre Candela during an internship in W3C; it's now maintained by Dominique Hazael-Massieux

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