Hash, hashes, hash mark, or hashing may refer to:

Substances

Hash (food) Hash is a dish consisting of chopped meat, potatoes, and fried onions. The name is derived from French language, French , meaning 'to chop'. Canned corned beef hash became especially popular in countries such as Britain and France during and ...

, a coarse mixture of ingredients, often based on minced meat *

Hash (stew) Hash is a name for a stew or gravy made of pork, offal and onions. It is usually paired with rice as "hash and rice". Hash is part of the cuisine of the Southern United States where it was invented as a way to use unappetizing cuts of meat. The dis ...

, a pork and onion-based gravy found in South Carolina * Hash, a nickname for

hashish Hashish (; ), usually abbreviated as hash, is a Compression (physics), compressed form of resin (trichomes) derived from the cannabis flowers. European Monitoring Centre for Drugs and Drug Addiction, Lisbon, As a Psychoactive drug, psychoactive ...

, a cannabis product

Hash mark

Hash mark (sports) In sports, a hash mark or hash line is a short line/ bar marking that is painted perpendicular to the sidelines or side barricades, used to help referees and players recognize on-field locations and visually measure distances. Hash marks serve t ...

, a marking on hockey rinks and gridiron football fields *

Hatch mark Hatch marks (also called hash marks or tick marks) are a form of mathematical notation. They are used in three ways as: * Unit and value marks — as on a ruler or number line * Congruence notation in geometry — as on a geometric figure * Gra ...

s, hash marks or tick marks, a form of mathematical notation *

Number sign The symbol is known as the number sign, hash, (or in North America) the pound sign. The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a Typographic ligature, ligatured abbre ...

(#), also known as the hash, hash mark, or (in American English) pound sign * Service stripe, a military and paramilitary decoration *

Tally mark Tally marks, also called hash marks, are a form of numeral used for counting. They can be thought of as a unary numeral system. They are most useful in counting or tallying ongoing results, such as the score in a game or sport, as no interm ...

, a counting notation *

Checkmate Checkmate (often shortened to mate) is any game position in chess and other chess-like games in which a player's king is in check (threatened with ) and there is no possible escape. Checkmating the opponent wins the game. In chess, the king is ...

symbol in chess

Computing

Hash function A hash function is any Function (mathematics), function that can be used to map data (computing), data of arbitrary size to fixed-size values, though there are some hash functions that support variable-length output. The values returned by a ...

, an encoding of data into a small, fixed size; used in hash tables and cryptography **

Hash table In computer science, a hash table is a data structure that implements an associative array, also called a dictionary or simply map; an associative array is an abstract data type that maps Unique key, keys to Value (computer science), values. ...

, a data structure using hash functions **

Cryptographic hash function A cryptographic hash function (CHF) is a hash algorithm (a map (mathematics), map of an arbitrary binary string to a binary string with a fixed size of n bits) that has special properties desirable for a cryptography, cryptographic application: ...

, a hash function used to authenticate message integrity *

URI fragment In computer hypertext, a URI fragment is a string of characters that refers to a resource that is subordinate to another, primary resource. The primary resource is identified by a Uniform Resource Identifier (URI), and the fragment identifier poi ...

, in computer hypertext, a string of characters that refers to a subordinate resource *

Geohash Geohash is a public domain geocode system invented in 2008 by Gustavo Niemeyer * * * which encodes a geographic location into a short string of letters and digits. Similar ideas were introduced by G.M. Morton in 1966. It is a hierarchical spat ...

, a spatial data structure which subdivides space into buckets of grid shape *

Hashtag A hashtag is a metadata tag operator that is prefaced by the hash symbol, ''#''. On social media, hashtags are used on microblogging and photo-sharing services–especially Twitter and Tumblr–as a form of user-generated tagging that enable ...

, a form of metadata often used on social networking websites *

hash (Unix) hash is a command on Unix and Unix-like operating systems that prints the location information for the commands found. The command has also been ported to the IBM i operating system. Syntax $ hash ame Description When the user gives a comman ...

, an operating system command *

Hash chain A hash chain is the successive application of a cryptographic hash function to a piece of data. In computer security, a hash chain is a method used to produce many one-time keys from a single key or password. For non-repudiation, a hash functi ...

, a method of producing many one-time keys from a single key or password *

Password hash In cryptography, a key derivation function (KDF) is a cryptographic algorithm that derives one or more secret keys from a secret value such as a master key, a password, or a passphrase using a pseudorandom function (which typically uses a cryp ...

Zobrist hashing Zobrist hashing (also referred to as Zobrist keys or Zobrist signatures Bruce Moreland/ref>) is a hash function construction used in computer programs that play abstract board games, such as chess and Go, to implement transposition tables, a spec ...

, a method of hashing chess positions into a key

Other uses

Hash House Harriers The Hash House Harriers (HHH or H3) is an international group of non-competitive running social clubs. An event organized by a club is known as a Hash or Run, or a Hash Run. A common denominal verb for this activity is Hashing, with participant ...

, a running club * ''Hash'' (EP) ('' '), a 2020 EP by Loona

Substances

Hash mark

Computing

Other uses

See also