ˈyear-long BrE AmE , year‧long /ˈjɪəlɒŋ, ˈjɜː- $ ˈjɪrlɒːŋ/ adjective [only before noun]
continuing for a year or all through the year:
a year-long study of the problem
ˈyear-long BrE AmE , year‧long /ˈjɪəlɒŋ, ˈjɜː- $ ˈjɪrlɒːŋ/ adjective [only before noun]
continuing for a year or all through the year:
a year-long study of the problem
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012