What is the definition of aquatint?

noun: aquatint; plural noun: aquatints1. a print resembling a watercolor, produced from a copper plate etched with nitric acid.the technique or process of producing aquatints.
verb: aquatint; 3rd person present: aquatints; past tense: aquatinted; past participle: aquatinted; gerund or present participle: aquatinting1. create (a print) using the aquatint process.

What i think is that it adds loudness for preachers/church choirs. it is also able to hold up a lot of weight without pillars. : )) idek tho