the negentropy, also negative entropy or syntropy or extropy or entaxy,wiener, norbert of a living system is the entropy that it exports to keep its own entropy low; it lies at the intersection of entropy and life. the concept and phrase "negative entropy" were introduced by erwin schrÃ¶dinger in his 1944 popular-science book what is life?schrÃ¶dinger, erwin, what is life - the physical aspect of the living cell, cambridge university press, 1944 later, lÃ©on brillouin shortened the phrase to negentropy,brillouin, leon: (1953) "negentropy principle of information", j. of applied physics, v. 24(9), pp. 1152-1163 lÃ©on brillouin, la science et la thÃ©orie de l'information, masson, 1959 to express it in a more "positive" way: a living system imports negentropy and stores it.mae-wan ho, what is (schrÃ¶dinger's) negentropy?, bioelectrodynamics laboratory, open university walton hall, milton keynes in 1974, albert szent-gyÃ¶rgyi proposed replacing the term negentropy with syntropy. that term may have originated in the 1940s with the italian mathematician luigi fantappiÃ¨, who tried to construct a unified theory of biology and physics. buckminster fuller tried to popularize this usage, but negentropy remains common. in a note to what is life? schrÃ¶dinger explained his use of this phrase.  indeed, negentropy has been used by biologists as the basis for purpose or direction in life, namely cooperative or moral instincts.jeremy griffith. 2011. what is the meaning of life?. in the book of real answers to everything! isbn 9781741290073. from http://www.worldtransformation.com/what-is-the-meaning-of-life/ in 2009, mahulikar & herwig redefined negentropy of a dynamically ordered sub-system as the specific entropy deficit of the ordered sub-system relative to its surrounding chaos.mahulikar, s.p. & herwig, h.: (2009) "exact thermodynamic principles for dynamic order existence and evolution in chaos", chaos, solitons & fractals, v. 41(4), pp. 1939-1948 thus, negentropy has units [j/kg-k] when defined based on specific entropy per unit mass, and [kâ1] when defined based on specific entropy per unit energy. this definition enabled: i) scale-invariant thermodynamic representation of dynamic order existence, ii) formulation of physical principles exclusively for dynamic order existence and evolution, and iii) mathematical interpretation of 
Entropy_and_information Statistical_deviation_and_dispersion Thermodynamic_entropy