from Wiktionary, Creative Commons Attribution/Share-Alike License
- Through, across.
from the GNU version of the Collaborative International Dictionary of English
- A prefix denoting through; also, between, apart, asunder, across. Before a vowel dia- becomes di-
from The Century Dictionary and Cyclopedia
- A prefix of Greek origin, meaning in Greek, and so, with modifications, in modern speech, ‘through, right through, in different directions, asunder, between,’ etc.: often intensive, ‘thoroughly, utterly,’ etc.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an intelligence agency of the United States in the Department of Defense; is responsible for providing intelligence in support of military planning and operations and weapons acquisition
From Ancient Greek prefix δια- (dia-), from διά (διά, "through, across, by, over") (Wiktionary)