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British Dictionary definitions for evening primrose oil

evening primrose oil

noun
  1. an oil, obtained from the seeds of the evening primrose, that is claimed to stimulate the production of prostaglandins
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012