We found 5 dictionaries that define the word sonic barriers:

General (4 matching dictionaries)

1. sonic barriers: Merriam-Webster
2. sonic barriers: Collins English Dictionary
3. sonic barriers: Wiktionary
4. sonic barriers: TheFreeDictionary.com

Computing (1 matching dictionary)

5. sonic barriers: Encyclopedia

(Note: See sonic_barrier as well.)

Definitions from Wiktionary (sonic barrier) ▸ noun:  sound barrier ▸ Also see sonic_barrier ▸ Words similar to sonic barriers ▸ Usage examples for sonic barriers ▸ Idioms related to sonic barriers ▸ Wikipedia articles (New!) ▸ Words that often appear near sonic barriers ▸ Rhymes of sonic barriers ▸ Invented words related to sonic barriers