bigram

from WordNet (r) 3.0 (2006)
bigram
    n 1: a word that is written with two letters in an alphabetic
         writing system
    
from The Collaborative International Dictionary of English v.0.48
bigram \bigram\ n.
   a word that is written with two letters in an alphabetic
   writing system.
   [WordNet 1.5]
    

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