Noun
English Wikipedia has an article on:stereoselectivityWikipedia
stereoselectivity (countable and uncountable, plural stereoselectivities)
(chemistry) 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.