<p><strong>Noun</strong></p><ul><li>the act of deviating.</li><li>departure from a standard or norm.</li><li>Statistics: the difference between one of a set of values and some fixed value, usually the mean of the set.</li><li>Navigation: the error of a magnetic compass, as that of a ship, on a given heading as a result of local magnetism.</li><li>Optics: the bending of rays of light away from a straight line.</li><li>angle of deviation.</li><li>departure or divergence from an established dogma or ideology, especially a Communist one.</li></ul>