res·i·den·cy 
/ˈrɛzədənsi/ noun
plural res·i·den·cies /ˈrɛzədənsi/ noun formal 1 a [noncount] : the state or fact of living in a place
▪ proof of residency [=residence] ▪ You must meet the town's residency requirement in order to vote.
b [singular] : a period of time when someone lives in a place
▪ a four-year residency in the country 2 [count] : legal permission to live in a place
▪ He was granted/denied residency. [=residence] 3 [count, noncount] chiefly US : a period when a doctor receives advanced training at a hospital in order to become a specialist in a particular field of medicine
▪ She recently completed her residency in pediatrics. ▪ a residency program 4 [count, noncount] : a period of time when a writer, artist, etc., lives and works at a college or other institution
▪ proof of residency [=residence] ▪ You must meet the town's residency requirement in order to vote.
b [singular] : a period of time when someone lives in a place
▪ a four-year residency in the country
▪ He was granted/denied residency. [=residence]
▪ She recently completed her residency in pediatrics. ▪ a residency program
