We found 3 dictionaries that define the word extremely low frequencies:

General (2 matching dictionaries)

1. extremely low frequencies: Collins English Dictionary
2. extremely low frequencies: Wiktionary

Computing (1 matching dictionary)

3. Extremely Low Frequencies: Encyclopedia

▸ Words similar to extremely low frequencies ▸ Usage examples for extremely low frequencies ▸ Idioms related to extremely low frequencies ▸ Wikipedia articles (New!) ▸ Words that often appear near extremely low frequencies ▸ Rhymes of extremely low frequencies ▸ Invented words related to extremely low frequencies