28th

from WordNet (r) 3.0 (2006)
28th
    adj 1: coming next after the twenty-seventh in position [syn:
           {twenty-eighth}, {28th}]
    
from The Collaborative International Dictionary of English v.0.48
28th \28th\ adj.
   1. coming next after the twenty-seventh in a series

   Syn: twenty-eighth
        [WordNet 1.5 +PJC]
    

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