Science    
The dictionary* definition of science is:

  • systematic knowledge of natural or physical phenomena

  • truth ascertained by observation, experiment and induction

  • ordered arrangement of facts



The etymological** derivation of science is from the Latin scientia, knowledge and sciscere, to seek to know.

 
* Collins National Dictionary, 1966
** Partridge, Origins (a short etymological dictionary
of modern English), 1958 - 1966