Shell

Shell may refer to:

Architecture and design

 * Shell (structure), a thin structure
 * Concrete shell, a thin shell of concrete, usually with no interior columns or exterior buttresses
 * Thin-shell structure

Biology

 * Seashell, a hard outer layer of a marine animal, found on beaches
 * Eggshell
 * Nutshell
 * Exoskeleton, an external covering of some animals
 * Mollusc shell
 * Bivalve shell
 * Gastropod shell
 * Shell, of a brachiopod
 * Turtle shell
 * Armadillo shell

Physics and chemistry

 * Electron shell or a principal energy level of electrons outside an atom's nucleus
 * Nuclear shell model, a principal energy level of nucleons within an atom's nucleus
 * On shell and off shell, quantum field theory concepts depending on whether classical equations of motion are obeyed

Mathematics

 * Spherical shell

Organisations

 * Shell plc formerly Royal Dutch Shell plc, a British multinational oil and gas company
 * Shell Oil Company or Shell USA
 * Shell Australia
 * Shell Canada
 * Shell Nigeria
 * Shell corporation, a type of company that serves as a vehicle for business transactions

Computing

 * Shell (computing), a type of user interface
 * Command-line interface, sometimes referred to as command shell
 * List of command-line interpreters, programs occasionally referred to as shells
 * Web shell, interface that enables a web server to be remotely accessed
 * Read–eval–print loop, also known as a language shell
 * Shell account, a user account on a remote server
 * Secure Shell, cryptographic network protocol
 * Shellsort or Shell sort, a sorting algorithm by Donald Shell
 * Shell, an empty expert system

Entertainment

 * Shell (2012 film), an independent drama film
 * Shell (upcoming film), an upcoming American thriller film
 * Shell (theater), a curved surface for reflecting sound
 * The Shells, a musical group
 * "Shells" (Angel), a TV episode
 * "The Shell" (The Amazing World of Gumball), a TV episode
 * Shell, a receptacle used in the Shell game

Places

 * Shell, Ecuador
 * Shell, Worcestershire, England
 * Shell, Wyoming, United States
 * Shell Lake (disambiguation), several places

Weaponry

 * Shell (projectile), an explosive device fired from artillery
 * Shotgun shell, a type of shotgun ammunition

Persons with the surname Shell

 * Art Shell (born 1946), American football player and coach
 * Brandon Shell (born 1992), American football player
 * Donald Shell (1924–2015), American computer scientist
 * Donnie Shell (born 1952), American football player
 * George W. Shell (1831–1899), U.S. Representative from South Carolina
 * Karl Shell (born 1938), American economist

Other uses

 * Racing shell, a watercraft
 * Shell (machinery), each half of a two-piece plain bearing


 * Coverage shell, the number of defenders guarding the deep portion of the field in American football
 * Conchiglie, a type of pasta