bimestrial

from WordNet (r) 3.0 (2006)

bimestrial
    adj 1: occurring every two months; "bimonthly visits" [syn:
           {bimonthly}, {bimestrial}]
    2: two months long; lasting two months

from The Collaborative International Dictionary of English v.0.48

Bimestrial \Bi*mes"tri*al\, a. [L. bimestris; bis twice + mensis
   month.]
   Continuing two months. [R.]
   [1913 Webster]

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