empiricism

empiricism is a   Noun

Definition:

[1] The method or practice of an empiric; pursuit of knowledge by observation and experiment.

[2] Specifically, a practice of medicine founded on mere experience, without the aid of science or a knowledge of principles; ignorant and unscientific practice; charlatanry; quackery.

[3] The philosophical theory which attributes the origin of all our knowledge to experience.

Synonyms: