Knowledge derived from investigation, observation, experimentation, or experience, as opposed to theoretical knowledge based on logical or mathematical assumptions. See also empiricism.

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  • The biologist gained valuable empirical knowledge when he conducted a series of studies of the different types of algae, comparing one algae against the other in the laboratory.

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  • The scientist shouted for joy as he read the latest research data, as his pet theory that he had always believed in, now had empirical data to back itself up.

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  • My opinion is based on hundreds of hours of observation of people driving to and from work, and therefore it has a very strong empirical foundation.

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