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  1. #1
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    Default Using "a" or "an" with initialisms starting with consonants that sound like vowels

    In writing using initialisms starting with "S" do you use "a" or "an". In particular, I am talking about an initialism like STI or STD. Do you write "an STI" or "a STI"?

  2. #2
    Ouisch's Avatar
    Ouisch is offline Moderator
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    Default Re: Using "a" or "an" with initialisms starting with consonants that sound like vowels

    You would say "an" STD. If the phonetic pronunciation of a letter begins with a vowel sound (such as M [em], S [ess], N [en], etc) then "an" is used.

  3. #3
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    Default Re: Using "a" or "an" with initialisms starting with consonants that sound like vowels

    Welcome, health professional.

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