Engraving may be defined as the art of creating or engraving a matrix, (made of wood, metal or plastic) so as to be able to reproduce and print it.

In fact, each engraving involves some kind of process: Both the matrix and the support which may receive ink to transfer it to paper as many times as needed, (or the matrix will allow) by means of a printing process, are referred to as engraving.

With the image obtained from the print (transferred to paper) of the engraved matrix. It is also known as a test sample or a print.