1) Agenda 2) An agenda 3) An item on an agenda 4) Item for action 5) Item on a list 6) Item on a plan 7) Item on a program 8) Item on a to-do list 9) List 10) Listing 11) Order of business 12) Piece of business 13) Program particular 14) Something that is to be done 15) Something to be done 16) Thing to do Found on https://www.crosswordclues.com/clue/agendum
• (n.) A church service; a ritual or liturgy. [In this sense, usually Agenda.] • (n.) Something to be done; in the pl., a memorandum book. Found on http://thinkexist.com/dictionary/meaning/agendum/
A·gen'dum noun ; plural Agenda [ Latin , neut. of the gerundive of agere to act.] 1. Something to be done; in the plural , a memorandum book. 2. A church service; a ritual or liturgy. [ In this sense, usually Agenda .] Found on http://www.encyclo.co.uk/webster/A/42