Douglas Harper's Etymology Dictionary
Wiktionary
flexography
n. A method of printing using a rubber or polymer rotate printing plate, most commonly used for packaging (labels, tape etc.).
Wikipedia
Flexography
Flexography (often abbreviated to flexo) is a form of printing process which utilizes a flexible relief plate. It is essentially a modern version of letterpress which can be used for printing on almost any type of substrate, including plastic, metallic films, cellophane, and paper. It is widely used for printing on the non-porous substrates required for various types of food packaging (it is also well suited for printing large areas of solid colour).