(historical) a former federal subject of Russia with center at Aginskoye; part of Zabaykalsky Krai and existed until it merged with Chita Oblast to form Zabaykalsky Krai on March 1, 2008

(chemistry) Derived from a plant of the family Aristolochiaceae. / (pathology) Caused by aristolochic acid.

plural of thought pattern

simple past tense and past participle of reast