Seal or SEAL may refer to: more...
- Seal (device), a device used to produce an official stamp as a symbol of authority, or the impression left by a seal in sealing wax, clay, etc. (Origin: Latin sigillum = "small symbol", a diminutive of signum)
- Seal (mechanical), a device to contain pressure, or exclude contamination from an enclosure: derived from the previous in its role to fasten an official document shut.
- Pinniped, a large marine mammal (origin: Anglo-Saxon seolh).
- Seal (musician), a British soul singer, who has released three eponymous albums: (Seal (1991 album), Seal (1994 album), Human Beings (1998), Seal (2003 album) and Seal Best of Album.
- Seal, Kent, a village in Kent, England (origin: probably Anglo-Saxon sēale = "copse of sallow-trees").
- U.S. Navy SEALs, special forces of the United States Navy (origin: acronym from "SEa, Air, Land").
- Semantics-directed Environment Adaptation Language, a computer programming language.
- SEAL (cipher), a cryptographic cipher.
- HMS Seal (N37), a submarine of the Royal Navy.
- Seal (color) is a color.
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