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.
What is a Disc Extrusion â Definition. An extrusion, also known as herniated disc, is a spinal condition that can lead to pain and increase the risk of further injury to the spine, and it can cause arthritis and other conditions. Both injury and aging can trigger this type of back condition.