apostrophe noun definition in Punctuation topic from the Oxford Advanced Learner's Dictionary


 noun: Punctuation topic
1 the mark ( ’ ) used to show that one or more letters or numbers have been left out, as in she’s for she is and ’63 for 19632 the mark ( ’ ) used before or after the letter ‘s’ to show that something belongs to somebody, as in Sam’s watch and the horses’ tails3 the mark ( ’ ) used before the letter ‘s’ to show the plural of a letter or number, as in How many 3’s are there in 9? and There are two m’s in ‘comma’.

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