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


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 periodicals archive ?
Worms with a certain mutation in daf-2 had a doubled life spanspanspanspanspanspanspanspanspanspan>>>>>>>>>, but worms with mutations in both genes had a normal life span.
To test the idea further, Gems measured the life spanspanspanspanspanspanspanspanspanspan>>>>>>>>> of worms with genetic mutations that made them less active.
BNSF decided to proceed with replacement of the approach <spanspanspanspanspanspanspanspanspan>>>>>>>> class=highlight>spans to take advantage of an economically favorable construction environment.
Pete Wilson's newly released options for replacing the east spanspanspanspanspanspanspanspanspanspan>>>>>>>>> of the San Francisco-Oakland Bay Bridge, but one question seemed to be on everybody's mind.