stereoselectivity

Noun

 * 1)  The condition of being stereoselective or a measure of the extent to which a reaction is stereoselective
 * Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
 * The stereoselectivity that occurs in these vinylcarbenoid cyclopropanations results in a strong preference for the formation of cis-divinylcyclopropanes.