The Consciousness Has Shifted...The Awakening Has Begun
As humans we daily experience our 3D little world (a world based on an x,y and z axis)... but we can think to our future and then plan stuff, as we can be nostalgic about our past... as a tiny glimpse of the 4D (time) as defined by sciences in its superstring theory about the 10 dimensions (11D in an other more developed theories). But when we go beyond the 4th dimension, it becomes quite a mess...
What people are used to name as "dimensions" are the metaphysical dimensions (loosely mixed with pseudo-sciences and very tiny fragments of science to make it look more "real"). These countless dimensions are most of the time the poor victims of our delirious imagination. Name it, there's tons, as many as you wish!!!! Heavens - hells (as many as there's religions), the astral, some "ghosts' dimensions, personal dimensions (sacred space), alternative realities etc...
So what's the deal about multi-dimensional beings? Some people think that these are some sort of tourists who happily hop from one to an other dimension, joyfully listening a Mary Poppins super hit song... but that's wrong. Such person would only be consider as a mono-dimensional person (according to meta-physic, a person born in a specific dimension) who travel through other dimensions, but certainly not a real multi-dimensional being.
A multi-dimensional being is one who can't be described nor fit into a 3D dimension since it is part of all dimensions at the same time. A being in a constant fluctuation between countless dimensions without being fully part of any at the same time. Do a 3D individual (you an i), could imagine itself traveling into a 2D world and naturally fit into it (watch the video upper)? It's just plain impossible, we'd just died. A 3D vessel can't function into a 2D or a 4D+ environment... nor it could in the vast majority of other meta-physical dimensions (physic laws etc). According to meta-physical theories, multi-dimensional beings tend to "de-ascend" to get a grip on something, to stabilize themselves into a dimension, to stop living in such constant flux. So why wanting to be something that even them can't endure?
Many of the so-called multi-dimensional beings (through meta-physic/religious/spirituality/myths) are entities who can tap into other dimensions to produce energy from the difference of potential between 2 to 5 (+/-) dimensions (tremendously far from the meta-physic's countless dimensions), but aren't part/native from ALL of these dimensions. Entities who can "portal" themselves (or partly) into other dimensions, even if not native from these. Multi-dimensional beings, on the counterpart, live at the edge of All dimensions... like living on the tip of an atomic-fine needle while being the needle and everything around it at the same time, out of time while being nowhere and everywhere... THAT is what it is to be a multi-dimensional being.
The christian's idea about God is pretty much the only thing who could fit the bill. So what the fuss around everybody wanting to become "multi-dimensional", they are just like us, just very differently made in an infinitely more complex way. People want to become like the Bible's "God"? Who'd really want it honestly. Wish to become an angelic portal guardian instead, it might suit more your ambitions and dreams about being a brightfull power-cell on 2 legs and having access to quite a few meta-physical dimensions. You'd be at least able to get a brilliant life and be an actor, not only an all-everything pointless observer who can do nothing.
BUT DON'T WORRY!! I also tend to talk about "spiritual" entities as being "multi-dimensional"... after all, they have access to more dimensions than us (physically)... but on such blurry definition, ghosts are multi-dimensional as angels, demons, dragons, elementals, fairies... and mediums too etc. I'm not the one that would like to be a real multi-dimensional being, it seems useless and totally futile... what fun there is if you can't interact nor accomplish anything because being above everything. Our dimensional limitations oddly allowing us to get somewhere, to do things, to appreciate our world, to better ourselves and be free.