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Explained by Jennifer
Editor at TextRanch
Last updated: March 17, 2025 • 5963 views
This is correct. 'An SOS' is more appropriate because the pronunciation of the acronym starts with a vowel sound.
Examples:
Alternatives:
This is correct. 'A SOS' is also commonly used, but 'an SOS' is more appropriate due to the pronunciation of the acronym.
Examples:
Alternatives:
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