placitum noun4 •A plea; a pleading; a judicial proceeding; a suit."By deleting in placitum the amount of 7c and inserting in lieu thereof the amount of 9c." •(historical) A public court or assembly in the Middle Ages, over which the sovereign presided when a consultation was held upon affairs of state. •(US, Australia) a legal decision made by a judge or court. •(UK, no longer used) A court, or cause in court. formsplacita