from The American Heritage® Dictionary of the English Language, 4th Edition
- pro. Something that has been mentioned previously; the same.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. The same.
from the GNU version of the Collaborative International Dictionary of English
- prep. The same; the same as above; -- often abbreviated id.
from The Century Dictionary and Cyclopedia
- The same; the same as above or before: used to avoid repeating something already written. Abbreviated id.
Latin, from id, it; see i- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin idem ("the same"). (Wiktionary)