English

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English numbers (edit)
 ←  12 13 14  → 
    Cardinal: thirteen
    Ordinal: thirteenth
    Adverbial: thirteen times
    Multiplier: thirteenfold
    Group collective: thirteensome

Etymology

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thirteen +‎ -fold

Adjective

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thirteenfold (not comparable)

  1. By a factor of thirteen, tredecuple.

Adverb

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thirteenfold (not comparable)

  1. By a factor of thirteen.