yearlong

from WordNet (r) 3.0 (2006)

yearlong
    adj 1: lasting through a year; "attending yearlong courses"

from The Collaborative International Dictionary of English v.0.48

year-long \year"-long\ yearlong \year"long\, adj.
   1. lasting through a year. attending year-long courses

   Syn: yearlong.
        [WordNet 1.5 + CM]