followup in WordNet English dictionary

1. a subsequent examination of a patient for the purpose of monitoring earlier treatment
   follow-up  followup  reexamination  review 
   
2. an activity that continues something that has already begun or that repeats something that has already been done
   follow-up  followup 
   
3. a piece of work that exploits or builds on earlier work
   "his new software is a follow-up to the programs they started with"
   follow-up  followup 
   

followup in English Wiktionary