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Anonymous Posted 14 years ago
Grammar

Use of 'an' with STD

I am little confused why 'an STD' is used instead of 'a STD' while 'a sexually transmitted disease' is used with the full form?
  

Top answer

When you say "STD", you pronounce each letter separately and the first sound is a vowel (S = e s).

  • When you say "STD", you pronounce each letter separately and the first sound is a vowel (S = e s).
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1 Answers
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When you say "STD", you pronounce each letter separately and the first sound is a vowel (S = es).

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