Definition of parietin in US English:

parietin

noun

Chemistry
  • An orange-yellow compound which is an anthraquinone derivative and occurs as a pigment in some lichens; 1,8-dihydroxy-3-methoxy-6-methylanthraquinone, C₁₆H₁₂O₅.

Origin

Mid 19th century; earliest use found in Robert Thomson (1810–1864), medical officer of health. From scientific Latin parietina, specific epithet of the lichen Xanthoria parietina from which the compound was obtained from post-classical Latin parietinus of or belonging to walls (Vulgate) from classical Latin pariet-, pariēs wall + -īnus; compare -in.

Pronunciation

parietin

/pəˈrʌɪɪtɪn/