Where to find the definition of parameters in datasheets.

[rohscomplaint]

When reading a datasheet, I always find some parameters that I don't know the meaning of them. There's also no definition inside the datasheet.
Where to find these definitions?

Thanks a lot.

 

[godfreyl]

Google, Wikipedia or an electronics textbook.

 

[tpetar]

When reading a datasheet, I always find some parameters that I don't know the meaning of them. There's also no definition inside the datasheet.
Where to find these definitions?

Thanks a lot.

Do you have some example of therms/parameters ?