from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To split (a group, for example) into disputatious factions: "Once a faculty is factionalized, of course, the process of appointments becomes partly a competition for allies” ( Calvin Trillin).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To split into factions
factional + -ize (Wiktionary)