Definition of unblind in US English:



[with object]
  • Conduct (a test or experiment) in such a way that it is not blind.

    • ‘That is correct, and we have not unblinded the study.’
    • ‘Stage 2 followed randomized patients from 25 to 33 months; in this stage, parents were unblinded.’
    • ‘Some of the patients in the control group who did not achieve resolution of the wart following the placebo injection were unblinded and given Candida antigen injections.’
    • ‘Study personnel were unblinded to subject assignment.’
    • ‘Aspirin, in a dosage of 125 mg daily, reduced active-infection days by nearly 50 percent in a small, unblinded pilot study.’