Otta
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Otta can mean:
- A working name leading to what became the SI prefix for 1024. It apparently came from the Greek ὀκτώ, eight, because it was equal to 10008. It had been informally introduced before 1991, date at which the real prefix, yotta, a deliberate variant largely chosen due to considerations of the symbol to use for it, was promulgated. See non-SI unit prefix.
- In Norse mythology, Otta the Simple was Freya's lover.
- Otta, Norway, a Norwegian town in Gudbrandsdal, named for the river Otta.