In practice it almost certainly is an electromagnetic motor, but I think it would be wisest to use this term, which is the one recommended by the International Electrotechnical Commission:

"en- (electrical) rotating machine

an electrical apparatus depending on electromagnetic induction for its operation and having components capable of relative rotary movement and intended for converting energy
NOTE – This term also applies to electrical apparatus operating on the same principle and similar in construction and intended for other purposes, e.g. regulation, supplying or absorbing reactive power. It is not intended to cover electrostatic machines.

es- máquina rotativa (eléctrica)"
http://www.electropedia.org/iev/iev.nsf/display?openform&iev...

There are plenty of references to "electrical rotating machines"; it's a standard term:

"The performance of an electrical rotating machine is defined by many material, component and design parameters."
http://www.isovolta.com/images/GetDownload.aspx?miid=c18eb5e...

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Note added at 7 mins (2011-12-22 11:59:02 GMT)
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Sorry, I meant "electromagnetic rotor", not "motor", in line 1.

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Note added at 5 days (2011-12-27 14:39:36 GMT) Post-grading
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Thanks, Neil, and Happy New Year :)