1(In ancient Greek) such a construction involving the participle of an impersonal verb, equivalent to the genitive absolute.
2(In German) an adverbial phrase formed from an accusative noun or pronoun followed by an (adjectival or non-finite verbal) adjunct.
3(In post-classical Latin) a construction equivalent to, and used instead of, the classical ablative absolute.
Mid 18th century. In use with reference to the classical languages, after post-classical Latin accusativus absolutus.