In this answer a reference was made to SLD cameras, also "called Mirrorless Interchangeable Lens Cameras". I realise that this is a synonym for "EVIL" cameras such as the micro-Four-Thirds cameras and the Sony NEX. But what does the acronym stand for?
Single Lens Digital (more on wikipedia). It doesn't really make sense in the context of EVIL cameras, since these cameras have interchangeable lenses.
That would be Single Lens Display, where the D replaces the R as in SLR.
Olympus also used the same acronym as Single Lens Direct View. Obviously there is implied that it is a direct view from the imaging sensor.
Now I do see some references where D stands for Digital instead, which I think is too broad since there are other types of cameras where it applies.
Until Sony introduced its SLT models which use a translucent mirror, the category may have been named MILC which stands for Mirrorless Interchangeable Lens Camera. but then it would have excluded this new type. Unsurprisingly, I've seen some sites and stores put the SLT models under the SLR category instead.