Declassify (verb)

To remove the classification or restriction of something, making it available to the public.

Origin:

From de- + classify, from the latin word classis class + -ify.

Examples:

1. The government declassified the documents after 50 years.
2. The CIA decided to declassify the information about the secret operation.
3. The company had to declassify its financial records to be listed on the stock exchange.
4. The historian requested the declassification of the military records from World War II.
5. The scientists are petitioning for the declassification of the research on extraterrestrial life.