from The American Heritage® Dictionary of the English Language, 4th Edition
- Ancient; prehistoric; old: paleobotany.
- Early; primitive: Paleozoic.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- very old; prehistoric
- very early; primitive
- related to paleontology
from the GNU version of the Collaborative International Dictionary of English
- A combining form meaning old, ancient.
from The Century Dictionary and Cyclopedia
- n. For words so beginning, not found below, see palæo-.
Greek palaio-, from palaios, ancient, from palai, long ago.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek παλαιός (palaios, "old"). (Wiktionary)