We found 16 dictionaries that define the word decommissioning:

General (9 matching dictionaries)

1. decommissioning: Merriam-Webster
2. decommissioning: Collins English Dictionary
3. decommissioning: Vocabulary.com
4. Decommissioning, decommissioning: Wordnik
5. decommissioning: Cambridge Advanced Learner's Dictionary
6. decommissioning: Wiktionary
7. decommissioning: Dictionary.com
8. Decommissioning: Wikipedia, the Free Encyclopedia
9. decommissioning: TheFreeDictionary.com

Business (3 matching dictionaries)

10. Decommissioning: Energy Dictionary
11. decommissioning: Legal dictionary
12. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

13. Decommissioning (disambiguation), decommissioning: Encyclopedia

Science (1 matching dictionary)

14. Decommissioning: NRC Glossary of Nuclear Terms --

Tech (2 matching dictionaries)

15. Glossary of Energy Terms (No longer online)
16. Nuclear Terms (No longer online)

(Note: See decommission as well.)

Definitions from Wiktionary (decommissioning) ▸ noun:  The act by which something is decommissioned. Similar: decommunization, deaccession, disembarkation, deallocation, deauthorization, discharging, deacquisition, decarbonization, decationization, demobilization, more... Opposite: commissioning, activating, initiating, launching Types: dismantling, disassembling, destroying, eradicating, eliminating, extinguishing, removing, more... Phrases: Nuclear decommissioning, Nuclear Decommissioning Authority, Decommissioning in Northern Ireland, Decommissioning of Russian nuclear-powered vessels, more... Adjectives: nuclear, eventual, prior, final, complex, actual, sustainable, parallel, future, full, partial ▸ Words similar to decommissioning ▸ Usage examples for decommissioning ▸ Idioms related to decommissioning ▸ Wikipedia articles (New!) ▸ Popular adjectives describing decommissioning ▸ Words that often appear near decommissioning ▸ Rhymes of decommissioning ▸ Invented words related to decommissioning