blocking

1. gerundparticiplepresentpresent participle and gerund of block

plural blockings

1. countableuncountableThe act by which something is blocked; an obstruction.

   blocking of major opposition sites

   1 more example

   Miss H.'s voice was clear and intelligible, although it alternated between vocal blockings and extreme vocal hurry, every clause being jetted out suddenly, and rapidly decaying into aphonia.

   1973, Oliver Sacks, Awakenings

2. countableuncountableThe precise movement and positioning of actors in order to facilitate a performance (originally planned using miniature blocks).
3. countableuncountableBlocks used to support (a building, etc.) temporarily.
4. countableuncountablecomputingA feature that prevents a keyboard from registering multiple simultaneous keypresses that would cause ghosting.

   Examine your matrix map, and make sure that no three keystrokes form a rectangle with a fourth keystroke that will cause you problems. This prevents both ghosting and blocking.

   2011, John St. Clair, Project Arcade: Build Your Own Arcade Machine, page 218

5. countableuncountablecomputingA rectangular discontinuity as an artifact of separating a discrete signal into blocks that are processed individually.

   Blocking is an annoying effect in image compression using JPEG especially at low bit-rates.

   2017, Sekine Asadi Amiri, Hamid Hassanpour, Image compression using JPEG with reduced blocking effects via adaptive down-sampling and self-learning image sparse representation, →DOI, page 1