adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Initialism of paranoid personality disorder. abbreviation, alt-of, countable, initialism, uncountable
2. 2
   Initialism of postpartum depression. abbreviation, alt-of, countable, initialism, uncountable
3. 3
   Initialism of purified protein derivative. abbreviation, alt-of, countable, initialism, uncountable
4. 4
   Initialism of pixels per degree (“a measurement of the visual fidelity of a virtual reality headset”). abbreviation, alt-of, countable, initialism, uncountable
5. 5
   proplyd; Abbreviation of protoplanetary disc. abbreviation, alt-of, countable

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6. 6
   Initialism of paraphenylenediamine. abbreviation, alt-of, countable, initialism, uncountable
7. 7
   Initialism of project product description. abbreviation, alt-of, countable, initialism, uncountable

Adjective

1. 1
   Abbreviation of postpaid (“having the cost of postage already paid”). abbreviation, alt-of, not-comparable

   "Stratigraphic and geological collections available. All shipments ppd. Full money back guarantee."

Synonyms

All synonyms

paranoid personality disorderparanoid personality disorderparaphenylenediaminepostpartum depressionprotoplanetary disk

Example

More examples

"Stratigraphic and geological collections available. All shipments ppd. Full money back guarantee."

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