tricenary adjective 2noun 1forms 1 adjective2 •(no longer used) Of or related to the number thirty. •(no longer used) Lasting thirty days.After Solon's time, the Civill year was Lunary... though diverse places of Greece,... did not for a long time after part with their tricenary months. — 1655 noun1 •Synonym of trental, a set of 30 requiem masses. formstricenaries
