Atramentum or atrament, generally means a very black, usually liquid, substance.

The specific epithet is derived from the Latin word atramentum "ink".

The iron-based atramentum called iron gall ink was in popular use from about the 12th to 19th century.

In ancient Rome, atramentum was used.

The Ancient Romans had a black writing ink they called Atramentum librarium.

In ancient Rome, the term atramentum signified any black colouring substance used for any purpose.

According to the pigment handbook, atramentum is a historical pigment or ink based on carbon black.

Apelles is credited of manufacturing method for atramentum elephantinum from burning ivory.

The Romans distinguished three principal kinds of atramentum, one called librarium (or scriptorium), another called sutorium, the third tectorium.

He was afterwards accused by Marcus Antonius Orator, we know not for what reason, and put an end to his own life by taking a solution of vitriol (atramentum sutorium, Cic., ad Fam.

In one modern commercial usage of the word, atramentum is deep black coloring substance manufactured by a reaction of an iron salt with tannic acid (the tannic acid for this purpose is often extracted from oak bark).

In the writings of the alchemists we find the words misy, sory, chalcanthum applied to alum as well as to iron sulfate; and the name atramentum sutorium, which one might expect to belong exclusively to green vitriol, applied indifferently to both.

Atramentum librarium was the writing ink of Roman times, atramentum sutorium was used by shoemakers for dyeing leather, atramentum tectorium (or pidorium) was used by painters for some purposes, apparently as a sort of varnish.

Historically, to atrament something would mean to write something down with ink.

Atramentum or atrament, generally means a very black, usually liquid, substance.

For example, an octopus may emit a puff of atrament (see cephalopod ink).

The word atrament is related to modern English atrocious: both originate from Latin atrare, which presumably meant to make something black.

Onyx flashed in her hair, and the delicate fabric that revealed, concealing, the outlines of her face and her body had the same silvery atrament of the stars.

However, the village's hejtman (captain), Satrapold, also loves Kalamaria, and after injustly arresting Atrament, he kidnaps Kalamaria with the help of his groom Blether and takes her to his castle.

The album, which is meant to be read as an "operetta in three acts", is set in 1913 Bohemia and tells the story of Atrament, a young wandering occultist who moves to the village of Jilemnice with the intent of furthering his studies on the occult arts.