from The American Heritage® Dictionary of the English Language, 4th Edition
- After; later: postmillennial.
- Behind; posterior to: postaxial.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- after, later
from the GNU version of the Collaborative International Dictionary of English
- A prefix signifying behind, back, after.
Latin, from post, behind, after; see apo- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin post ("after, behind"). (Wiktionary)