See <<inversion>>

For two networks which are equivalent as far as conditions at the terminals are concerned, a set of equations giving the admittances or impedances of the branches of one circuit in terms of the admittances or impedances of the other.

1. Transfer and incorporation of foreign deoxyribonucleic acid (DNA) into a cell and subsequent recombination of part or all of that DNA into the cell's genome. Also known as bacterial transformation; genetic transformation.

2. Conversion of a normal cell to a neoplastic cell by a cascade of events under the control of different classes of oncogenes. Also known as cellular transformation.

The process of projecting a photograph (mathematically, graphically, or photographically) from its plane onto another plane by translation, rotation, or scale change.

Change in a lymphocyte from a small, resting lymphocyte into a large lymphocyte following stimulation by antigens or lectin, or viral infection. Also known as lymphocyte transformation.

A function, usually between vector spaces.