<p><strong>Verb</strong></p><ul><li>(used with object)<ul><li>Chemistry: To combine or treat with chlorine.</li><li>To introduce chlorine atoms into an organic compound by an addition or substitution reaction.</li><li>To disinfect (water) by means of chlorine.</li><li>Metallurgy: To treat (a gold ore) with chlorine gas in order that the gold may be removed as a soluble chloride.</li></ul></li></ul>