/
əˈdʒɛndə/
n.
  - a list of items to be discussed at a meeting. 
▸a list of matters to be addressed.
 ▸the underlying intentions or motives of a particular person or group:
 Miller has his own agenda and it has nothing to do with football.
 - N. Amer. an appointment diary.
 
Usage
Although agenda is the plural of agendum in Latin, in standard modern English it is normally used as a singular noun with a standard plural form (agendas). See also usage at data and media1.
Etymology
C17: from L., neut. pl. of agendum, gerundive of agere ‘do’.