sal·e·ra·tus noun alsosal·ae·ra·tus\ˌsaləˈrād.əs\ (-es) Etymology: New Latin sal aeratus, from Latin sal salt + aeratus aerated, from Latin aer- + -atus -ate, from the carbon dioxide that is evolved upon treatment with acids : either of two salts used as leavening agents: a.: potassium bicarbonate b.: sodium bicarbonate