Part of Speech-Noun

Definition– The act of saying something in a public, official, or definite way

Source–http://www.merriam-webster.com/dictionary/proclamation

Encountering of Word-Abraham Lincoln set forth the Emancipation Proclamation during the Civil War and i always knew what emancipation meant but never proclamation.

Understanding-Now i understand that this document was Abraham Lincoln publicly emancipating the slaves from the crucial act of slavery.