ULF Views 8 meanings found ULF is an acronym that spans scientific and charitable contexts, referring to concepts like ultra‑low frequency signals, unidentified life forms, a foundation for leukodystrophy research, and design terms such as ultra‑low floor. Medical Union Learning Fund Miscellaneous Ultra Large Female Community United Leukodystrophy Foundation Unidentified Life Forecast Academic & Science Unidentified Life Form Ultra-Low Frequency Ultra-Low Floor Underspecified Logical Form