We found 33 dictionaries that define the word sonic:

General (22 matching dictionaries)

1. sonic: Longman Dictionary of Contemporary English
2. sonic: Merriam-Webster
3. sonic: Oxford Learner's Dictionaries
4. sonic: American Heritage Dictionary of the English Language
5. sonic: Collins English Dictionary
6. sonic: Vocabulary.com
7. Sonic, sonic: Wordnik
8. sonic: Cambridge Advanced Learner's Dictionary
9. sonic: Wiktionary
10. sonic: Webster's New World College Dictionary, 4th Ed.
11. sonic: The Wordsmyth English Dictionary-Thesaurus
12. sonic: Infoplease Dictionary
13. sonic: Dictionary.com
14. sonic: Online Etymology Dictionary
15. SONIC (Ethernet controller), SONIC, Sonic (ISP), Sonic (TV Channel), Sonic (TV channel), Sonic (disambiguation), Sonic (restaurant), Sonic (train), Sonic: Wikipedia, the Free Encyclopedia
16. sonic: Rhymezone
17. sonic: FreeDictionary.org
18. sonic: Mnemonic Dictionary
19. sonic: TheFreeDictionary.com
20. Sonic (character): Wikipedia, the Free Encyclopedia

Art (1 matching dictionary)

21. -sonic: A Cross Reference of Latin and Greek Elements

Computing (1 matching dictionary)

22. sonic: Encyclopedia

Medicine (3 matching dictionaries)

23. sonic: Merriam-Webster Medical Dictionary
24. online medical dictionary (No longer online)
25. sonic: Medical dictionary

Miscellaneous (1 matching dictionary)

26. SONIC: Acronym Finder

Religion (1 matching dictionary)

27. Scientology® and Dianetics® (No longer online)

Slang (1 matching dictionary)

28. sonic: Urban Dictionary

Tech (3 matching dictionaries)

29. sonic: Electronics
30. DOD Dictionary of Military Terms (No longer online)
31. Schlumberger Oilfield Glossary (No longer online)

(Note: See sonically as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Of or relating to sound. ▸ adjective:  Having a speed approaching that of the speed of sound in air. Similar: transonic, audible, hearable, sonant, aural, soundy, sonoric, phonic, sonicative, sonological, more... Opposite: ansonic, ultrasonic Types: supersonic, hypersonic, supersonal, ultrasonic, transonic, more... Phrases: sonic boom, sonic booms, sonic hedgehog, sonic waves, sonic anemometer, more... Adjectives: sst, ultra, sub, grindo, micro, visual, astro, near Colors:     blue,     azure,     sky blue,     electric blue,     royal blue, more... ▸ Word origin ▸ Words similar to sonic ▸ Usage examples for sonic ▸ Idioms related to sonic ▸ Wikipedia articles (New!) ▸ Popular nouns described by sonic ▸ Words that often appear near sonic ▸ Rhymes of sonic ▸ Invented words related to sonic