Back-formation em ''Manipulate''

Avatar do usuário OEstudantedeIngles 5450 2 16 106
Hey =)

O verbo 'manipulate' é um back-formation da palavra 'manipulation', correto?

Can you help me with that?
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Avatar do usuário PPAULO 39175 6 32 684
The word/verb "manipulate" is the root or root word, and the "ion" would be affixed to it, making it a derivation of that word.

Wouldn´t be a back-formation, to my thinking, because it has a new sense (meaning) or function (like turning a noun into an adjective etc).
Back-formation sounds like having the same meaning or very close. To me the "back" in back-formation would go back to that word itself in its original ways.
But not being a linguistic I may be mistaken, others may disagree on that one. Let´s wait for further comments.

https://en.wikipedia.org/wiki/Morphological_derivation
http://grammar.about.com/od/ab/g/backformterm.htm