adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Initialism of phase-frequency detector. abbreviation, alt-of, initialism
2. 2
   Initialism of personal flotation device. abbreviation, alt-of, initialism

   "Return your PFD to a hanger on the PFD storage rack."

3. 3
   Initialism of primary flight display. abbreviation, alt-of, initialism
4. 4
   Initialism of process flow diagram. abbreviation, alt-of, initialism
5. 5
   Initialism of photon flux density. abbreviation, alt-of, initialism

Adjective

1. 1
   Initialism of prepared for dyeing. abbreviation, alt-of, initialism, not-comparable

Synonyms

All synonyms

personal flotation device

Example

More examples

"Return your PFD to a hanger on the PFD storage rack."

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