pdf

/P IY1 D IY1 EH1 F/
noun
  1. 1

    Portable Document Format

noun
  1. 1

    Any function whose integral over a set gives the probability that a random variable has a value in that set

Source: https://en.wiktionary.org/wiki/PDF, https://en.wiktionary.org/wiki/pdf, https://en.wiktionary.org/wiki/probability%20density%20function