physis

Physis (; ; pl. physeis, φύσεις) is a Greek philosophical, theological, and scientific term, usually translated into English—according to its Latin translation "natura"—as "nature". The term originated in ancient Greek philosophy, and was later used in Christian theology and Western philosophy. In pre-Socratic usage, physis was contrasted with , , "law, human convention". Another opposition, particularly well-known from the works of Aristotle, is that of physis and techne – in this case, what is produced and what is artificial are distinguished from beings that arise spontaneously from their own essence, as do agents such as humans. Further, since Aristotle the physical (the subject matter of physics, properly "natural things") has been juxtaposed to the metaphysical.

== Linguistics == The Greek word physis can be considered the equivalent of the Latin natura. The abstract term physis is derived from the verb phyesthai/phynai, which means “to grow”, “to develop”, “to become” (Frisk 2006: 1052; Caspers 2010b: 1068). In ancient philosophy one also finds the noun "physis" referring to the growth expressed in the verb phyesthai/phynai and to the origin of development (Plato, Menexenos 237a; Aristotle, Metaphysics 1014b16–17). In terms of linguistic history, this verb is related to forms such as the English “be”, German sein or Latin esse (Lohmann 1960: 174; Pfeifer 1993: 1273; Beekes 2010: 1598). In Greek itself, the aorist (a verbal aspect) of “to be” can be expressed with forms of phynai. With regard to its kinship with “being” and the basic meaning of the verb stem phy- or bhu- (“growing”), there has long been criticism of the conventional translation of the word "physis" with “nature”. With the Latin natura, which for its part goes back to the verb nasci (“to be born”), one transfers the basic word "physis" into a different sphere of association. In this way, the emerging growth (of plants, for instance) is transferred into the realm of being born.