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phytonadione

[fahy-toh-nuh-dahy-ohn]
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noun Biochemistry.
  1. vitamin K1.
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Origin of phytonadione

phyt(ic acid) + -o- + na(phthoquinone) + dione
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018