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empirical

em·pir·i·cal

empirical

 
pronunciation:
ihm pi r kl
part of speech: adjective
definition: based on or verifiable by experience or experiment, rather than on or by theory.
Claims for the effectiveness of the drug are based on empirical evidence.Scientists use the empirical method so that their results can be verified.
antonyms:
a priori, theoretical
derivations: empirically (adv.), empiricalness (n.)