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.
Extruded Discs in the Spinal Column. An extruded disc is also sometimes called a transligamentous disc, or more commonly, a ruptured disc. This disc profile entails a partial migration of all or part of the nucleus out of the annulus. Disc extrusions represent a minority of herniations, compared to the more common bulging disc profile.