I. ˈtrīs ə nˌerē, ˈtris-; trīˈsenərē, -ˈsēn- noun
( -es )
Etymology: Medieval Latin tricenarium
: trental
II. adjective
Etymology: Latin tricenarius of thirty, from triceni thirty each + -arius -ary; akin to Latin triginta thirty, Greek triakonta, Sanskrit trimśat thirty, Latin tres three — more at three
1. : having or lasting 30 days
a tricenary month
2. : based on the number 30
a tricenary scale