What does fth stand for?

Fathom (NTIO)

Faith

Fathom

Feedback Threshold (CCCA)

Ferritin Heavy Chain - Medicine (EDAA)

Fetch (VLIE)

Fiberglass Technologists, Hendersonville, TN - Manufacturer code for watercraft hull identification number (USCG)

Fourier Transform Holographic

Fuel Tank Helicopter

Full Tree Harvesting (SAUS)