en su mayor parte

= largely, mostly, for the most part

Ex. The reason for its popularity was largely that it was based upon a principle of conformity in essentials, and freedom in details.

Ex. Mostly such new schemes will not be general schemes.

Ex. Only one fact holds true in all catalog worlds: library users -- despite their great personal differences and interests -- are, for the most part, expected to negotiate their own way through whatever catalog is presented to them.

* * *

= largely, mostly, for the most part

Ex: The reason for its popularity was largely that it was based upon a principle of conformity in essentials, and freedom in details.

Ex: Mostly such new schemes will not be general schemes.

Ex: Only one fact holds true in all catalog worlds: library users -- despite their great personal differences and interests -- are, for the most part, expected to negotiate their own way through whatever catalog is presented to them.