Editing Block (section)

==Science and technology==
* [[Block (periodic table)]], a set of adjacent groups in the periodic table
* [[Block (meteorology)]], large-scale patterns in the atmospheric pressure field
* [[Fault block]], a geologic zone or geologic province
* [[Block, Inc.]], an American technology company formerly known as Square 

===Computing===
* [[Blockchain]], a segment of an open list of data records
* [[Block (data storage)]], the practice of storing electronic data in equally sized units
* [[Block (Internet)]], technical measures to restrict users' access to certain internet resources
** Blocking access to certain websites is one form of [[internet censorship]] 
* Block or [[subnet]] of the Internet, a subset of the internet in a set of contiguous IP addresses
* [[Block (programming)]], a group of declarations and statements treated as a unit
* [[Block (telecommunications)]], a unit of data transmission
* [[Block artifact]], a type of distortion in a compressed image
* [[Block-level element]], in the HTML markup language
* [[Blocks (C language extension)]], an extension to the C programming language designed to support parallel programming
* [[Unicode block]], a named range of codepoints in Unicode
** [[Block Elements]], a Unicode block of block-shaped characters

===Engineering===
* [[Engine block]] and cylinder block, the main part of an internal combustion engine
* [[Block (sailing)]], a single or multiple pulley used on sailboats

===Medicine===
* [[Nerve block]], or regional nerve blockade, any deliberate interruption of signals traveling along a nerve, often for the purpose of pain relief
* [[Third-degree atrioventricular block]] (AV block), a medical condition

===Mathematics===
* [[Block (permutation group theory)]]
* Block, in [[modular representation theory]]
* Block, in graph theory, is a  [[biconnected component]], a maximal biconnected subgraph of a graph
* [[Aschbacher block]] of a finite group
* [[Block design]], a kind of set system in combinatorial mathematics
* [[Block matrix]]
* [[Block of a ring]], a centrally primitive idempotent or the ideal it generates