Webster's English Dictionary

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nucleate

1. nu.cle.ate \'n(y)u:-kle--.a-t\ \.n(y)u:-kle--'a--sh*n\ vb [LL nucleatus, 
   pp. of nucleare to become stony, fr. L nucleus] 1: to form into a nucleus : 
   CLUSTER  2: to act as a nucleus for  3: to supply nuclei to  1: to form a 
   nucleus : CLUSTER  2: to act as a nucleus  - nu.cle.ation n
2. nu.cle.ate \'n(y)u:-kle--*t\ aj [L nucleatus, fr. nucleus kernel] : 
   having a nucleus or nuclei {~ cells}