/ˌseɪmiˈyõʊ̃; French seɪmiˈyɔ̃/Show Spelled[sey-mee-yohn; French sey-mee-yawn]Show IPA
noun
a variety of white grape used in winemaking, especially in France in the Sauternes district of Bordeaux.
Origin: 1870–75; < French, earlier sémilion < Gasconsemilhoun, equivalent to Old Provençalsemilh(ar) to sow, derivative of seme seed (< Latinsēmen; see semen) + Gascon,Provençal-oun agentive suffix (apparently alluding to the variety's high productivity)