Definition of operationalist in English:

operationalist

noun & adjective

Philosophy

See operationalism

‘This suffices to qualify stress as a permissible concept from the operationalist standpoint.’
  • ‘He adopted a constructivist interpretation of mathematics which bordered upon formalism, and regarded this as the natural complement to his operationalist philosophy in physics.’
  • ‘Those who said that these were real because they were useful were instrumentalists, while those who said they were real to the extent that they correlated with measurements were operationalists.’