LONG. Meaning of LONG. in English I. Long. written abbreviation for LongfordII. Long ‧ ford /ˈlɒŋfəd $ ˈlɔːŋfərd/ BrE AmE written abbreviation , Long. a ↑ county in the Republic of Ireland Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012