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 ?
The project was completed in partnership with Balfour Beatty and schools will also be given information about the new crossings. Smith's Wood Academy has told parents of pupils: "Parallel crossings are similar to zebra crossing but also provide a section for cyclists to ride across the road.
The crossing, near to Freshfield Station, has claimed the lives of three people since 2014, the most recent in February of this year.
BEIRUT: Final preparations are underway to reopen the northern Bekaa's Jousi crossing on the Lebanese-Syrian border.
"Based on the concentration of crossings and the potential for reduction in horn sounding, the central core should remain as the first phase of obtaining a railroad quite zone," Tom Larsen, the city's traffic operations manager, wrote in a July 16 memo to Mayor Kitty Piercy and the City Council.
The congestion at the Turkish border crossing unit formed on Friday afternoon, according to reports of an Istanbul-based correspondent of the Bulgarian National Radio.
lengths, the crossings include a diamond-plate, skid-resistant surface; formed rail recesses to maintain track gauge in the base module; and, a nonconductive rail boot that eliminates false shunting when trains aren't present.
PUFFIN CROSSINGS Like a pelican crossing, except the lights are on the near side of the road.
These, and many other incidents, have fuelled a drive to close level crossings. In January, Network Rail announced it had met its target, set in 2010, of closing 750 crossings -10% of the total--by April 2014.
They proposed "a new, more streamlined procedure to close individual level crossings where it is in the public interest to do so", and to sweep away old legal provisions superseded by more recent law.
"School crossing patrol did far more than cross children over roads," said Cllr Shaun Redmond of Holyhead.
The report contains one recommendation addressed to Network Rail, seeking improvements in its management processes for user worked crossings with telephones.