preposition/sə.lɔ̃/
according to; whichever applies; depending on
“Selon plusieurs témoins, il est parti tout de suite.” — According to several witnesses, he left right away.
Related: selon que
Inherited from Old French selunc, selonc, from earlier solonc, sulonc, sulunc, probably from a Vulgar Latin *sublungum, from Latin sub + longum, possibly a calque of Frankish *galang (“according, depending, relating to”). Alternatively from a supposed Old French *seon, an old form of segun, son (“in accordance with”) (itself from Latin secundum; compare Old Occitan segon), later crossed with long, lonc.