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Related to spanning: Spanning tree, Spanning set

span

(span),
The amount, distance, or length between two points; the full extent or reach of anything.

span

(span)
1. The distance from one fixed point to another, as the distance, when the hand is fully expanded, from the tip of the thumb to the tip of the little finger.
2. A length of time.
3.. The duration of a process.

attention span

The duration of sustained concentration on a task or activity. See: hyperactivity (2); attention deficit-hyperactivity disorder

digit span

A test of memory and attention.
See: digit span test

life span

The maximum obtainable age of a member of a species.

memory span

The number of words or objects one can store and recall when asked to do so. See: digit span test
References in classic literature ?
I think in every quiet season now, still do those waters roll and leap, and roar and tumble, all day long; still are the rainbows spanning them, a hundred feet below.
The station for the country house was at the opposite end of the town, the time was short, the road not easy; but she was so quick in pouncing on a disengaged coach, so quick in darting out of it, producing her money, seizing her ticket, and diving into the train, that she was borne along the arches spanning the land of coal-pits past and present, as if she had been caught up in a cloud and whirled away.
Riverstone's Rapid Ring Spanning Tree Protocol (RRSTP) solution optimizes rapid spanning tree technology for ring topologies to significantly improve network resiliency on Ethernet rings.