Definition of atrament
1 obsolete : ink writing with atrament
2 : a very dark substance —usually used of liquids a puff of atrament emitted by the octopus
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Origin and Etymology of atrament
Middle English, from Latin atramentum, from (assumed) Latin atrare to make black (from Latin atr-, ater black) + Latin -mentum -ment — more at atrocious
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