Ulf

noun

noun ·1 syllable ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Initialism of Ultra Low Frequency, the band of radio waves between 300 hertz and 3000 hertz. abbreviation, alt-of, initialism

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.