from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Permanent, enduring; that does not perish.
from the GNU version of the Collaborative International Dictionary of English
- adj. Unfading; lasting.
from The Century Dictionary and Cyclopedia
Middle French inmarcessible (1482), later immarcescible ("that does not shrivel" or "that does not perish"), from Latin immarcescibilis ("unfading"). (Wiktionary)