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Medical Dictionary

annatto

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noun an·nat·to \ə-ˈnät-(ˌ)ō, -ˈnat-\

Medical Definition of annatto

  1. :  a yellowish red dyestuff made from the pulp around the seeds of a tropical tree (Bixa orellana of the family Bixaceae) and used especially for coloring oils, butter, and cheese





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