(mathematics) a transformation that is a combination of single transformations such as translation or rotation or reflection on an axis | the act of changing in form or shape or appearance |
| (genetics) modification of a cell or bacterium by the uptake and incorporation of exogenous DNA |
| a rule describing the conversion of one syntactic structure into another related syntactic structure |
| a qualitative change |
| (mathematics) a function that changes the position or direction of the axes of a coordinate system |