amphinucleus

noun
am·phi·nu·cle·us | \ˌamfə̇-\

Definition of amphinucleus 

: a cell nucleus that contains a large karyosome

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First Known Use of amphinucleus

1903, in the meaning defined above

History and Etymology for amphinucleus

New Latin, from amphi- + nucleus

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The first known use of amphinucleus was in 1903

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