Meaning of EMPIRICAL in English
adj.1 based or acting on observation or experiment, not on theory.
2 Philos. regarding sense-data as valid information.
3 deriving knowledge from experience alone.
Phrases and idioms:
empirical formula Chem. a formula showing the constituents of a compound but not their configuration.
Oxford English vocab. Оксфордский английский словарь. 2012