tetrastern.
/tɪˈtrastə/ Biology.
A karyokinetic figure formed in the modification of a cell-nucleus by the combination of four star-like masses of chromatin united by spindles or filaments.
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the world > life > biology > biological processes > genetic activity > genetic components > [noun] > other structures in mitosis
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1890 J. S. Billings National Med. Dict. II Tetraster, the figure presented when there are four centres of radiation during the indirect division of a nucleus into four daughter-nuclei.
1909 J. W. Jenkinson Exper. Embryol. 128 In the case where two sperm-nuclei unite with the egg-nucleus a tetraster is formed, that is four asters united by spindles in a square or rhombus.
This entry has not yet been fully updated (first published 1911; most recently modified version published online June 2018).
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n.1890