We found 20 dictionaries that define the word ice storm:

General (14 matching dictionaries)

1. ice storm: Merriam-Webster
2. ice storm: Oxford Learner's Dictionaries
3. ice storm: American Heritage Dictionary of the English Language
4. ice storm: Collins English Dictionary
5. ice storm: Vocabulary.com
6. ice-storm: Wordnik
7. ice storm: Wiktionary
8. ice storm: Infoplease Dictionary
9. ice storm: Dictionary.com
10. Ice storm (disambiguation), Ice storm, The Ice Storm (film), The Ice Storm (soundtrack), The Ice Storm, The ice storm: Wikipedia, the Free Encyclopedia
11. ice storm: Rhymezone
12. ice storm: FreeDictionary.org
13. ice storm: Mnemonic Dictionary
14. ice storm: TheFreeDictionary.com

Computing (1 matching dictionary)

15. ice storm: Encyclopedia

Science (1 matching dictionary)

16. Weather Glossary (No longer online)

Slang (1 matching dictionary)

17. Ice Storm: Urban Dictionary

Tech (3 matching dictionaries)

18. Glossary of Meteorology (No longer online)
19. Lake and Water Word Glossary (No longer online)
20. National Weather Service Glossary (No longer online)

(Note: See ice_storms as well.)

Definitions from Wiktionary (ice storm) ▸ noun:  A storm in which rain freezes on contact with the ground to form a sheet of ice. Similar: silver storm, icestorm, winter storm, frost, sleet, silver frost, snowicane, ice shove, ice road, rime, more... Opposite: heat wave, thaw, melting Types: freezing rain, sleet, snow, blizzard, thunderstorm, hurricane, tornado, more... Phrases: January 1998 North American ice storm, The Ice Storm, more... Adjectives: hail, inch, agglomerate, riming, awash, wintry, snowcapped, bomb, algific, stickle, fresh ▸ Words similar to ice storm ▸ Usage examples for ice storm ▸ Idioms related to ice storm ▸ Wikipedia articles (New!) ▸ Words that often appear near ice storm ▸ Rhymes of ice storm ▸ Invented words related to ice storm