name · noun · verb · 10 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/pi di ɛf/
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:P IY2 D IY2 EH1 F
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
name
Meaning 1
Initialism of Parkinson's Disease Foundation, now just Parkinson's Foundation.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, initialism, obsolete
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
name
Meaning 2
Abbreviation of People's Defence Force (“armed paramilitary anti-military-rule rebel group in Myanmar”).
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
Initialism of Portable Document Format, a standard for representing electronic documents, allowing them to be transmitted and reproduced accurately with the same printed layout.
Definition source: English Wiktionary via Wiktextract