from the GNU version of the Collaborative International Dictionary of English
- adj. Of or pertaining to Pierides or Muses.
from The Century Dictionary and Cyclopedia
- Of or belonging to Pieria, or the Pierides or Muses.
- [lowercase] In entomology, same as pieridine.
Sorry, no etymologies found.
And while “ignorance is bliss” (with regards to slander the point being raised to dismiss it) one must “drink deep, or taste not at all of the pierian spring” (with regards to fiduciary duties but I recall thinking how apropos to employment law, only seen it the one time but it fit well with “ignorance isbliss”).