(biology) 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.

plural of diaster

(chemistry) A stereoisomer having multiple chiral centres; a diastereoisomer cannot normally be superimposed on the mirror image of another.

plural of diastereoisomer

plural of diastereoselectivity

(organic chemistry) The preferential formation of one diastereoisomer over another; also, the degree of said preference

diastereoisomerization

(chemistry) The formation of diastereomers from other isomers

(chemistry) Alternative form of diastereoisomer

plural of diastereomer