Main Entry: ¹man·da·to·ry

Pronunciation: \ˈman-də-ˌtȯr-ē\

Function: adjective

Date: 15th century

1 : containing or constituting a command : obligatory <the mandatory retirement age>
2 : of, by, relating to, or holding a League of Nations mandate

— man·da·tor·i·ly \-ˌtȯr-ə-lē\ adverb