Simple past tense and past participle of convoke.(verb)
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Use "convoked" in a sentence
"Aug. 1 -- Government's inquiry about France's intentions concerning ultimatum to Russia causes French mobilization; Kaiser signs mobilization order; Reichstag convoked; war speech by Chancellor;"
"The meeting was convoked as the euro-zone's financial strains further enmeshed Italy's sovereign debt, which at €1.6 trillion in tradable bonds is the region's largest."
"Mrs. Kirchner convoked a rare news conference Monday to discuss the primary win and her upcoming agenda."