Di*as"ter(?), n. [Gr. di- = di`s- twice + star.] (Biol.) A double star; -- applied to the nucleus of a cell, when, during cell division, the loops of the nuclear network separate into two groups, preparatory to the formation of two daughter nuclei. See Karyokinesis.
Di*as"to*le(?), n. [L., fr. Gr. , fr. to put asunder, to separate; dia` through + to set, to place.] 1. (Physiol.) The rhythmical expansion or dilatation of the heart and arteries; -- correlative to systole, or contraction.
(Gram.) A figure by which a syllable naturally short is made long.
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Fri 03rd July 2020