Define "dimension," "exponent(ial)," "(order of)magnitude," and "meta," and relate them.
dimension... axis of differentiation.
exponential... widening of widening / enlargement of enlargement
(order of) magnitude... taken not in the way commonly used in mathematics but in a less specific sense... magnitudal differentiation between the parameters within which things are magnitudally differentiated.
Examples:
Add exponential, meter to kilometer, deciliter to liter etc (what's commonly referred to as orders of magnitude)... Adding a zero or taking away one is to zoom in or zoom out to a degree dependent on the value of the current zoom setting, making its nature exponential (1 <--> 10 <---> 100). This system is thus a very lucid example of exponential in the context of and together with magnitude (necessitating (order of)).
Add dimension instead and get 1D to 2D to 3D and bla... Zoom in or zoom out in terms of magnitude of axises of differentiation.
Add Both and get exponential differentiation within 1D, 2D, 3D and bla. Zoom in or zoom out in terms of exponential magnitudes across axises of differentiation.
meta... about, pertaining to. in the case of meta-level (1 up), meaning not about, but encompassing the entirety of. the definition of game is a meta-level containing the definition of chess. the "idea of physics" containing the entirety of the idea of biology, geology, etc within its parameters.
According to this, the 3 former concepts combined are meta and metaleveling up/down.
I claim the deliciously constructed cake as a shared prize with the baker :3