Definition of "POP"

POP

noun
plural POPs
1. (telecommunications) Acronym of point of presence.
2. (trade) Acronym of Point of Purchase.
3. (weather) Acronym of probability of precipitation.
4. (television) Acronym of picture outside of picture.
5. (environmental science) Acronym of persistent organic pollutant.
  Quotations
  One commonly used POP (persistent organic pollutant), organochlorine, may be responsible for contaminating the world's seafood supply, since pesticides can run off the land into streams, lakes, and reservoirs.
  2009, Edward Group, Complete Colon Cleanse: The At-Home Detox Program to Restore Good Health, Boost Vitality, and Ensure Longevity, Ulysses Press, page 91
proper noun
1. (Internet) Acronym of Post Office Protocol.
2. (historical) Initialism of Pacific Ocean Park.
  Quotations
  The parachutes at Riverview Park will shake us up all day / And Disneyland and P.O.P. is worth a trip to L.A
  1965, Mike Love, Brian Wilson (lyrics and music), “Amusement Parks U.S.A.”, performed by The Beach Boys
adjective
not comparable
1. Acronym of post office preferred. (denoting a standard envelope size)