Dictionary
sin•gle-blind
Pronunciation: (sing'gul-blīnd'), [key]—
adj.
of or pertaining to an experiment or clinical trial in which the researchers but not the subjects know which subjects are receiving the active medication or treatment and which are not: a technique for eliminating subjective bias, as the placebo effect, from the test results. Cf.
double-blind. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.