psocid: small winged insect living on the bark and leaves of trees and feeding on e.g. fungi and decaying plant matter
psocopterous insect: small soft-bodied insect with chewing mouthparts and either no wings or two pairs
diethylstilbesterol: synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy