General:
* Primary Key: In database management, a primary key is a column or set of columns that uniquely identifies each row in a table.
* Personal Knowledge: This is often used in legal and ethical contexts, referring to something known only by a particular individual.
* Public Key: In cryptography, a public key is part of a key pair used for asymmetric cryptography. It can be shared publicly and is used to encrypt messages that can only be decrypted by the corresponding private key.
Specific Fields:
* Parkinson's disease (PK): A progressive neurodegenerative disease that affects movement.
* Potassium (K): A chemical element that is an essential mineral in the human body.
* Physical Key: A physical device used to unlock a door, safe, or other object.
* Power Kill: In gaming, a term referring to a move that instantly kills an opponent.
Other:
* Pakistan (PK): The country code for Pakistan.
* Payable Key: A payment information related key.
To understand the full form of PK in a particular context, you need more information about the situation. For example, if you see PK in a database table definition, it most likely refers to a primary key.
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