of or relating to an experiment, esp one to discover people's reactions to certain commodities, drugs, etc, in which the experimenters but not the subjects know the particulars of the test items during the experiment
Compare double-blind
single-blind in American English
(ˈsɪŋgəlˈblaɪnd)
adjective
designating or of a technique used to test objectively the effects of a drug, course of treatment, etc. in which the researchers but not the subjects know during the testing who isactually receiving the drug, treatment, etc.