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), 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), 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 string of characters that refers to a subordinate resource * Geohash, 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), an operating system command * Hash chain, a method of producing many one-time keys from a single key or password * Password hash * Zobrist hashing, a method of hashing chess positions into a key

Other uses

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

Substances

Hash mark

Computing

Other uses

See also