term:

Form

form n

1 : the structure of something (as a document) as distinguished from its matter [a defect in , not substance]
2 : established procedure according to rule or practice see also form of action
3 : a printed or typed document with blank spaces for insertion of required or requested information [tax s]

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.