roam ‧ ing /ˈrəʊmɪŋ $ ˈroʊ-/ BrE AmE noun [uncountable]
the process that a ↑ mobile phone uses when it is in a different country or area from usual, and has to connect to a different network
roam ‧ ing /ˈrəʊmɪŋ $ ˈroʊ-/ BrE AmE noun [uncountable]
the process that a ↑ mobile phone uses when it is in a different country or area from usual, and has to connect to a different network
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012