vi, -tat*ed  -tat*ing  1  :  to become interlocked like the fingers of folded hands <thick myosin filaments with the thin actin filaments -J. M. Squire>   2  :  to undergo intercuspation <these teeth do not completely -J. A. Glassman>  in*ter*dig*i*ta*tion n 
 
 
 
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