1. the formal act of proclaiming
giving public notice

e.g. his promulgation of the policy proved to be premature

Synonym: proclamation

2. the official announcement of a new law or ordinance whereby the law or ordinance is put into effect

3. a public statement containing information about an event that has happened or is going to happen

e.g. the announcement appeared in the local newspaper
the promulgation was written in English

Synonym: announcement