Meaning of eighteenth

eight•eenth

Pronunciation: (ā'tēnth'), [key]
— adj.
  1. next after the seventeenth; being the ordinal number for 18.
  2. being one of 18 equal parts.
—n.
  1. an eighteenth part, esp. of one ().
  2. the eighteenth member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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