sulfur trioxide

Noun

 * 1)  A corrosive liquid, SO3, which forms sulfuric acid on contact with water; made commercially by the oxidation of sulfur dioxide.

Translations

 * Chinese:
 * Cantonese: 三氧化硫
 * Mandarin:
 * Czech: oxid sírový
 * French:
 * German: Schwefeltrioxid
 * Hungarian: kén-trioxid
 * Italian:, anidride solforica
 * Swedish: