1. Military materiel, such as weapons, ammunition, combat vehicles, and equipment.
2. The branch of an armed force that procures, maintains, and issues weapons, ammunition, and combat vehicles.
3. Cannon; artillery.
[Middle English ordnaunce, variant of ordinaunce, order, military provision; see ORDINANCE.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.