Definition of experimenter in US English:



  • 1A person who performs a scientific procedure, especially in a laboratory, to determine something.

    ‘each participant was tested by a trained experimenter’
    • ‘These results indicate that experimenters have a better chance obtaining unambiguous results when they pay subjects.’
    • ‘To examine treatment effects, experimenters manipulate independent variables and control extraneous variables.’
    • ‘It is not surprising that the first questions taken up by the rocket experimenters were those considered the most significant by the ground-based researchers.’
    • ‘To ensure that measurements were unbiased by the experimenters' expectations, the image files were randomly coded.’
    • ‘Participants were tested individually by an experimenter blind to the hypothesis of the experiment.’
    • ‘Often the experimenter is not interested in keeping the cells but simply in analyzing the distribution of cell size in the suspension.’
    • ‘Like patients who told their therapists what they wanted to hear, research subjects validated experimenters' hypotheses.’
    • ‘He certainly compiled a mountain of evidence from his five-year voyage on the Beagle, but he was also a skilled experimenter and researcher.’
    • ‘Knowing this, the early experimenters did not use such tests.’
    • ‘The computer recorded reaction times and accuracy, thereby limiting the potential for experimenter bias in data collection.’
    1. 1.1 A person who tries out new ideas, methods, or activities.
      ‘early experimenters with structure and harmony’
      • ‘He seems to have lived out the tragic myth of the American writer, the bold experimenter who flies too high and is punished by a breakdown of some kind.’
      • ‘A tireless experimenter, educator, and politician, he has been leading the architecture profession in a new direction for the past 40 years.’
      • ‘Research suggests early experimenters could have made the image decades before 1839, considered the year photography was born.’
      • ‘A prolific composer, he was a restless, eclectic experimenter throughout his life.’
      • ‘Where are the innovators and experimenters in rock?’
      • ‘Farmers have always been great experimenters.’
      • ‘Throughout his life he was a ceaseless experimenter and his style changed restlessly.’
      • ‘He's an inveterate experimenter, once trying 14 different espresso machines to determine which one produced the best crema.’
      • ‘Late in life, still the keen experimenter, he became the first major choreographer to use computer technology.’
      • ‘They are a generation of experimenters and may have beliefs garnered from several different religious philosophies.’