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What does OP stand for?

OP stands for Original Pack (pharmacology)

This definition appears frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

See other definitions of OP

Other Resources:
We have 29 other meanings of OP in our Acronym Attic

Samples in periodicals archive:

This helps if individual cards get separated from their original pack when being played in the classroom.