Blocking may refer to: Science, technology, and mathematics Computing and telecommunications Blacklist (computing) Blocking (computing), holding up a task until an event occurs Blocking (radio), interference by an off-frequency signal Blocking probability, for calls in a telecommunications system Head-of-line blocking, in some network switching fabrics Internet blocking; see Block (Internet) Psychology Thought blocking, a type of thought disorder Blocking effect, in psychology Mental block, a type of suppression or repression Other uses in science Blocking (linguistics), where the existence of a competing form blocks the application of a morphological process Blocking (statistics), in the design of experiments, the arranging of experimental units in groups (blocks) which are similar to one another Atmospheric blocking, a phenomenon in meteorology of large scale stationary pressure cells Blocking, in the western blot technique, a process to prevent unwanted binding of antibodies to a membrane Other technologies Blocking (construction), short boards used as reinforcement or to provide attachment points in wood-framed and other forms of construction Sport Blocking (American football), the legal interference with another player's motion Blocking (martial arts), a defensive technique in martial arts Theatre and film Blocking (stage), the movement and positioning of actors on a stage, or within a frame in film Blocking (animation), a technique in which key poses establish timing and placement of items in a scene Other uses Blocking (textile arts), the process of stretching a knitted garment into shape while wet or using steam Blocking (transport), the process of dividing a transit schedule into parts that can be operated by a single vehicle Blocking troops - military barrier troops positioned to forestall unauthorised retreats See also Block (disambiguation) Non-blocking (disambiguation)