from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To grant authority or power to.
- transitive v. To give permission for; sanction: the city agency that authorizes construction projects.
- transitive v. To be sufficient grounds for; justify.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To grant (someone) power or authority (to do something specific).
- v. To give (someone) permission; to sanction or consent.
- v. To permit (something), to sanction or consent to (something).
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To clothe with authority, warrant, or legal power; to give a right to act; to empower.
- transitive v. To make legal; to give legal sanction to; to legalize.
- transitive v. To establish by authority, as by usage or public opinion; to sanction.
- transitive v. To sanction or confirm by the authority of some one; to warrant.
- transitive v. To justify; to furnish a ground for.
from The Century Dictionary and Cyclopedia
- To give authority, warrant, or legal power to; empower (a person): as, to authorize commissioners to settle the boundary of a state.
- To give authority for; approve of and permit; formally sanction (an act or a proceeding).
- To make authoritative or valid; legalize; validate.
- To establish by authority or usage: as, an authorized idiom.
- To warrant; vouch for.
- To support (one's self) upon the authority (of).
- Also spelled authorise.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. give or delegate power or authority to
- v. grant authorization or clearance for
Middle English auctorisen, from Old French autoriser, from Medieval Latin auctōrizāre, from Latin auctor, author; see author.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French autoriser (Wiktionary)