DES noun 6phrase 1 noun6 •Abbreviation of diethylstilbestrol.DES was widely prescribed to pregnant women in the 1950s to prevent premature deliveries (although it was of only questionable benefit in this regard). — 2010 •Initialism of Dry Eye Syndrome. •Initialism of Drug-Eluting Stent. •Initialism of Dark Energy Survey, (an astronomy project). •Initialism of Diffuse Esophageal Spasm. •Initialism of Deep Ecliptic Survey, (an astronomy project). phrase1 •Initialism of Delivered Ex Ship.