re ‧ fer ‧ ral /rɪˈfɜːrəl/ BrE AmE noun [uncountable and countable] formal
[ Word Family: verb : ↑ refer , ↑ referee , ↑ reference ; noun : ↑ referee , ↑ reference , ↑ referral ; adjective : ↑ referable ]
when someone sends someone or something to another person to be helped or dealt with
referral to
The doctor will give you a referral to a specialist in your area.
Only 39 percent of patients were seen within four weeks of referral.