n (mathematics) The replacement of the variables in an algebraic expression by their values in terms of another set of variables; a mapping of one space onto another or onto itself; a function that changes the position or direction of the axes of a coordinate system.
n (linguistics) A rule that systematically converts one syntactic form into another; a sentence derived by such a rule.
n (genetics) The alteration of a bacterial cell caused by the transfer of DNA from another, especially if pathogenic.
n (politics|South Africa) Ideologically driven government policy - becoming more conformant with socialist and African nationalist groupthink.