The alteration of a bacterial cell caused by the transfer of DNA from another, especially if pathogenic.
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.
The transition from the apartheid era to a multiracial democracy in South Africa.
A marked change in appearance or character, especially one for the better.
The act of transforming or the state of being transformed.
A rule that systematically converts one syntactic form into another; a sentence derived by such a rule.