What is the websters unabridged international dictionary of English language bicentennial 1976 edition?

The "Webster's Unabridged International Dictionary of the English Language Bicentennial 1976 Edition" is a misnomer. There was no dictionary published with that exact title in 1976.

Here's why:

* Webster's Unabridged Dictionary is a general term used for large, comprehensive dictionaries, often tracing their lineage to the original dictionary compiled by Noah Webster in the late 18th century.

* Merriam-Webster is the publishing company that produces the most well-known version of "Webster's Unabridged Dictionary".

* 1976 was a significant year for Merriam-Webster because they released the Third New International Dictionary, a major revision of their previous unabridged edition.

Therefore, you're likely referring to the "Third New International Dictionary (3rd Edition)" published by Merriam-Webster in 1976. This dictionary was a groundbreaking work that introduced many new features and updates.

If you have another edition in mind, please provide additional information about it, such as the publisher or any other details.