Main Entry: ³span

Function: transitive verb

Inflected Form(s): spanned; span·ning

Date: 1560

1 a : to measure by or as if by the hand with fingers and thumb extended b : measure
2 a : to extend across <a career that spanned four decades> b : to form an arch over <a small bridge spanned the pond> c : to place or construct a span over
3 : to be capable of expressing any element of under given operations <a set of vectors that spans a vector space>