from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of, pertaining to, or derived from fir trees.
- adj. Of or pertaining to abietic acid or its derivatives.
from the GNU version of the Collaborative International Dictionary of English
- adj. Of or pertaining to the fir tree or its products.
from The Century Dictionary and Cyclopedia
- Of or pertaining to trees of the genus Abies; derived from the fir.
Rosin contains abietic acid, which is a respiratory irritant, carcinogen, neurotoxin, and is known for its reproductive and developmental toxicity.
It is also stated to contain abietic anhydride C44 H62 O4, but it is difficult to understand how a compound containing C44 can be produced from C10 H16.