O1: Officer grade: Ensign or 2nd Lieutenant
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Others
Language: English
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What is the full form of O1?
O1 stands for Officer grade: Ensign or 2nd Lieutenant. Fullformexpand.com has 1 other full form for abbreviation O1.
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"O1." Fullformexpand.com, https://www.fullformexpand.com/o1/168526. Accessed 17 Nov. 2025.
Fullformexpand.com, 2025. "O1." Accessed November 17, 2025. https://www.fullformexpand.com/o1/168526.
"O1." (n.d.). Fullformexpand.com. Retrieved November 17, 2025, from https://www.fullformexpand.com/o1/168526.
O1. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/o1/168526 (Accessed: 17 November 2025).
Found 1 other full form for O1 →
| Term | Full Form | Category |
|---|---|---|
| $O1 | Pipe file (DOS)
| Others |
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