Noun
English Wikipedia has an article on:carnosic acidWikipedia
carnosic acid (uncountable)
(organic chemistry) The diterpenoid carboxylic acid (4aR,10aS)-5,6-dihydroxy-1,1-dimethyl-7-propan-2-yl-2,3,4,9,10,10a-hexahydrophenanthrene-4a-carboxylic acid present in rosemary and sage