The definition of an apostrophe is the punctuation that is used to indicate possession, pluralization of abbreviations, and as an indicator of the exclusion of letters such as in a contraction.(noun)
An example of usage of an apostrophe is to add 's to the name John when describing to whom his car belongs.
See apostrophe in Webster's New World College Dictionary
Origin: L < Gr apostrophē, a turning away from the audience to address one person < apostrephein < apo-, from + strephein, to turn: see strophe
Origin: Fr < LL apostrophus < Gr apostrophos (prosōidia), averted (accent): see apostrophe
See apostrophe in American Heritage Dictionary 4
Origin: , from Late Latin apostrophus
Origin: , from Greek apostrophos
Origin: , from apostrephein, to turn away
Origin: : apo-, apo-
Origin: + strephein, to turn; see streb(h)- in Indo-European roots.
Origin: Late Latin apostrophē
Origin: , from Greek
Origin: , from apostrephein, to turn away; see apostrophe1.
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