This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Relying on or derived from observation or experiment: empirical results that supported the hypothesis.

adj. Verifiable or provable by means of observation or experiment: empirical laws.

adj. Guided by practical experience and not theory, especially in medicine.

adj. Pertaining to or based on experience.

adj. Pertaining to, derived from, or testable by observations made using the physical senses or using instruments which extend the senses.

adj. Verifiable by means of scientific experimentation.

Pertaining to or derived from experience or experiments; depending upon or derived from the observation of phenomena.

as a general proposition, from a narrow range of observation, without any warrant for its exactitude or for its wider validity.

Pertaining to the medical practice of an empiric, in either of the medical senses of that word; hence, charlatanical; quackish.

adj. relying on medical quackery

adj. derived from experiment and observation rather than theory

"This is what we call empirical information on the ground."

experiential    falsifiable    observational    experimental    verifiable    existential    trial-and-error    confirmable    a posteriori    data-based   

nonempirical   

empirical certainty    law    anecdotal evidence   

empiricist    empiricism   

empirically   

empiric   

lyrical    satirical   

statistical    theoretical    quantitative    subjective    transcendental    physiological    metaphysical    valid    conceptual    sociological