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nonary

[noh-nuh-ree]
adjective
  1. consisting of nine.
  2. of, relating to, or noting a numerical system based on the number 9.
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noun, plural no·na·ries.
  1. a number in a nonary system.
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Origin of nonary

1660–70; < Latin nōnārius of, belonging to the ninth (hour), equivalent to nōn(us) ninth + -ārius -ary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018