Other
- tera-, a prefix in the SI system of units denoting 1012, or 1 000 000 000 000
- Terabyte, a trillion bytes
- Tera language, a Chadic language spoken in north-eastern Nigeria
- Topfree Equal Rights Association, a women's advocacy group
- TERA Rifle, Japanese special rifles developed for paratroopers
- tERA, a baseball statistic
- The Exiled Realm of Arborea (TERA), a massive multiplayer online computer game
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