shell

structural element in solid mechanics

Shell or Shells 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 ==Science== ===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, between two concentric spheres ==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 and command-line interpreter 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 Unix shell, a shell for Unix-like operating systems Shell script, a computer program designed to be run by a shell Bash (Unix shell) Bourne shell 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 (2024 film), an American thriller film Shell (theater), a curved surface for reflecting sound The Shells, a musical group "Shell (Of a Man)", a song by Saya Gray from SAYA, 2025 "Shells" (Angel), a TV episode "The Shell" (The Amazing World of Gumball), a TV episode Shell, a receptacle used in the Shell game "Shell", a song by Arrested Development from Zingalamaduni ==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 1946¹), 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 Shell (disambiguation) Karl Shell (born 1938), American economist Rita Shell (1863–1950), British magazine editor ==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 ==See also== Shell suit, a descendant of the tracksuit Shel, a given name Shels (disambiguation) sv:Skal

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