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Definition of subject line noun from the Oxford Advanced Learner's Dictionary

subject line

noun
 
/ˈsʌbdʒɪkt laɪn/,
 
/ˈsʌbdʒekt laɪn/
 
/ˈsʌbdʒɪkt laɪn/,
 
/ˈsʌbdʒekt laɪn/
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  1. the line of text at the start of an email that says what it is about; the space where this is written
    • Please include your customer reference number in the subject line of the email.
    • The subject line read, ‘How good is your credit score?’
    Topics Phones, email and the internetb2
competitor
noun
 
 
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Sports
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