Crossing


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crossing

1. a place, often shown by markings, lights, or poles, where a street, railway, etc., may be crossed
2. the intersection of the nave and transept in a church
3. the act or process of crossbreeding

Crossing

The square space of a cruciform church, created by the intersection of the nave and chancel with the transept. Intersection of two elements in the form of a cross, such as the ridges of a cross gable.

Crossing

 

a ventilation device installed in underground mine workings and designed to separate and isolate intersecting flows of air, such as fresh air and exhaust air. Depending on the airflow and period of service, crossings may be made of metal and concrete piping or in the form of a well-secured bypass shaft driven through the rock in the roof or soil of the bed.


Crossing

 

(also interbreeding or hybridizing), one of the methods of the selective breeding of plants and animals. Crossing is used to obtain hybrids and crossbreeds that represent the initial material in selection and culling for economically beneficial characteristics. It is also used in the development of new breeds and varieties.

The various systems of crossing can be classified in one of two categories: inbreeding and outbreeding. Variants of outbreeding include crossbreeding, incrossing (crossing inbred lines of the same breed or variety), incrossbreeding (crossing inbred lines of different breeds or varieties), topcross (crossing specially selected inbred male lines with outbred female lines), and more remote crossings. In animal breeding, crossing is understood to mean crossbreeding, which is divided into induced crossbreeding, reproductive crossing, grading up, and commercial crossbreeding. (See alsoHYBRIDIZATION.)


Crossing

 

in medieval, primarily Romanesque and Gothic, churches, the place where the nave and transept intersect.

crossing

1. In a church, the place where the nave and chancel cross the transept.
2. A painting technique whereby freshly applied paint is rebrushed at right angles to the direction of application and then rebrushed at right angles again to provide even distribution of paint over the surface.
3. Same as crossbanding.
References in periodicals archive ?
Two other Glendale rail crossings were closed in recent years, and the proposed Flower Street crossing is needed to compensate, officials said.
Disney is creating its Grand Central Creative Campus - or GC3 - in the industrial west Glendale neighborhood where its Imagineering facility is located and where the Flower Street crossing would be.
Only one crossing network provider currently works with more than 10 different aggregators.
Nearly 25% of crossing system providers credit algorithmic participation as the largest factor in recent volume increases.
Global Crossing IP services are global in scale, linking the world's enterprises, governments and carriers with customers, employees and partners worldwide in a secure environment that is ideally suited for IP-based business applications, allowing e-commerce to thrive.
Web Crossing, Web Crossing Express, Team Crossing, Campus Crossing, Support Crossing, and webcrossing.
Built on the core Web Crossing engine, Web Crossing Express has all the robust user access controls available in Web Crossing, plus Themes to wrap HTML pages and a plug-in architecture for extensibility without programming.
The new Neurons plug-in highlights the new customization and extensibility architecture of the recently released Web Crossing version 5.
Campus Crossing license upgrades are available today starting at $119.
Instantly extending the system to include Wiki collaborative areas for group content creation in simple Web page format, the new Wiki plug-in is a quick download and installs directly into a Web Crossing 5.
The Weblog Plug-in makes it incredibly easy to add blogging to any Web Crossing collaborative environment," explained Tim Lundeen, president and CEO of Web Crossing, Inc.