1.
the branch of knowledge that deals with the creation and use of technical means and their interrelation with life, society, and the environment, drawing upon such subjects as industrial arts, engineering, applied science, and pure science.
2.
the application of this knowledge for practical ends.
3.
the terminology of an art, science, etc.; technical nomenclature.
4.
a scientific or industrial process, invention, method, or the like.
5.
the sum of the ways in which social groups provide themselves with the material objects of their civilization.