From Wikipedia, the free encyclopedia
3H is a symbol for tritium.
3H or 3-H may also refer to:
- 3H, or British Rail Class 205
- 3H Movement, a liberal Turkish youth organization
- 3H Biomedical, a Swedish biotechnology company
- Mu-3H, a model of Mu (rocket family)
- Yuri 3H, a Broadcasting Satellite (Japanese)
- SSH 3H (WA), alternate designation for Washington State Route 27
- Old Natchez Trace (230-3H)); see Old Natchez Trace segments listed on the National Register of Historic Places
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