释义 |
du·o·decennial \|d(y)ü(ˌ)ō+\ adjective Etymology: Late Latin duodecennium period of 12 years (from Latin duodecim twelve — from duo two + -decim, from decem ten — + -ennium, from annus year) + English -al — more at two, ten, annual : occurring once in 12 years |