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What is the difference between "synergistic" and "synergetic"? I believe they both speak of the cooperation of multiple things to produce an output, but how do they differ?

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It would be tempting to say that any difference relates to the difference between synergy and synergism, but a quick search suggests that there is no consistent correlation between noun and adjectival forms across several fields of use. – Fortiter Jan 11 '13 at 2:48
I think there isn't a difference, they seem to by synonymous, according to the dictionaries I checked. – Fraser Orr Jan 11 '13 at 2:55
synergetic [ˌsɪnəˈdʒɛtɪk], synergistic adj another word for synergistic thefreedictionary.com/synergetic – Kris Jan 11 '13 at 6:31
A slight distinction exists between synergetic & synergistic, a term also used scientifically in med., anat., phys. & pharmacology. The latter use implies a net gain through the combined action of two muscles, hormones, chemical agents, etc; that is greater than the sum of the constituent elements acting independently. Synergetic, while connoting the simultaneous, motion-impelling action of multiple forces, makes allowance for the vector nature of forces in the physical sciences. [based on Fergus J. Wood, springerreference.com/docs/html/chapterdbid/30915.html] – Kris Jan 11 '13 at 6:45

Other than synergistic having some specialized meanings in theology and medicine, both have the same definition as per the OED. Synergistic is the older of the two and, at least in my experience, more common.

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What does “as per” say in your sentence above that “per” alone does not? Isn’t “as per” a bit too much? – tchrist Jan 11 '13 at 5:09
as per is the standard expression in parts of the world outside the US. as per Consistent, or in accordance, with. en.wiktionary.org/wiki/as_per – Kris Jan 11 '13 at 6:32

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