Question

what is the full form of PK​

Answer 1

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Pharmacokinetics (PK), (from Ancient Greek pharmakon “drug” and kinetikos “moving, putting in motion”), is a branch of pharmacology concerned with the movement of drug into, through, and out of the body—the time course of its absorption, bioavailability, distribution, metabolism, and excretion.

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Answer 2

Explanation:

There is no full form of PK. In the movie, the male protagonist (played by Aamir Khan), is an alien on Earth and asks people questions which seem so weird that all ask him "PK hai kya?" which means "Are you drunk?". So, he just adopts that as a name and hence the movie title.