Meaning of SIO | Babel Free
Definitions
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Initialism of senior investigating officer. UK, abbreviation, alt-of, initialism
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Initialism of snap-in-one. abbreviation, alt-of, initialism, slang
CEFR level
A2
Elementary
This word is part of the CEFR A2 vocabulary — elementary level.
This word is part of the CEFR A2 vocabulary — elementary level.