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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 classic literature ?
He saw the spur-track that must run up from the valley and across the upland pastures, and he ran the grades and built the bridge that would spanspanspanspanspanspanspanspanspanspan>>>>>>>>> the canon, until it was real before his eyes.
Bashti had lived very long, had lived most wisely and thought much, and was thoroughly aware that, having lived far beyond the spanspanspanspanspanspanspanspanspanspan>>>>>>>>> of man his own span was very short.
It was hard to believe, as he looked back over it, that the whole great spanspanspanspanspanspanspanspanspanspan>>>>>>>>> was incurably disabled, was already as good as condemned, because something was out of line in the lower chord of the cantilever arm.
He is compounded of meat and wine and sparkle, of sun-mote and world- dust, a frail mechanism made to run for a spanspanspanspanspanspanspanspanspanspan>>>>>>>>>, to be tinkered at by doctors of divinity and doctors of physic, and to be flung into the scrap-heap at the end.
In love affairs, there is no mediator like a merry, simple-hearted child - ever ready to cement divided hearts, to spanspanspanspanspanspanspanspanspanspan>>>>>>>>> the unfriendly gulf of custom, to melt the ice of cold reserve, and overthrow the separating walls of dread formality and pride.
If the wisest of men hath compared life to a spanspanspanspanspanspanspanspanspanspan>>>>>>>>>, surely we may be allowed to consider it as a day.