Span is the amount of area or the amount of time that something encompasses.(noun)
See span in Webster's New World College Dictionary
Origin: borrowed in U.S. < Du span, in same sensea team of two animals used together
Origin: ME spanne < OE sponn, akin to Ger spanne < IE *(s)pen(d)-, to pull, draw (> spin, Gr span, to pull) < base *spe-, to pull, extend
Origin: ME spannen < OE spannan, join: see span
transitive verb, intransitive verb
See span in American Heritage Dictionary 4
Origin: Middle English, unit of measurement
Origin: , from Old English spann; see (s)pen- in Indo-European roots.
transitive verb spanned spanned, span·ning, spans
Origin: Dutch spannen, to harness
Origin: , from Middle Dutch; see (s)pen- in Indo-European roots.
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