Digital watermarking is the act of hiding a message related to a digital signal (i.e. an. image, song, video) within the signal itseclosely related to lf. It is a concept. steganography, in that they both hide a message inside a digital signal. However, what. separates them is their goal.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  extrude(Verb) To push or thrust out. 2  extrude(Verb) To form or shape (a metal, plastic etc.) by forcing it through a die or an opening.
10 hilariously insightful foreign words. Extrusion, from the Latin past participle extrudere meaning âto thrust out,â refers both to the process in which material is forced through a die or series of dies in order to shape it as well as to the product of that operation.The process is used in the home and in manufacturing.d. In manufacturing, extrusion is used with a variety of materials, including metal, plastic, ceramics, and food. Different materials undergo this process to make different types of products. Copper is extruded to make pipes for plumbing, while aluminum is used to make things like window frames, tracks, and railings.