<p><strong>Noun</strong></p><ul><li>the act of permuting or permutating; alteration; transformation.</li><li>Synonyms: change, transmutation, modification.</li><li>Mathematics: the act of changing the order of elements arranged in a particular order, as abc into acb, bac, etc., or of arranging a number of elements in groups made up of equal numbers of the elements in different orders, as a and b in ab and ba; a one-to-one transformation of a set with a finite number of elements.</li><li>any of the resulting arrangements or groups.</li></ul><p><strong>Adjective</strong></p><ul><li>consisting of or having component parts connected in series: a series circuit; a series generator.</li></ul>