dimension

Hi Space Forum, I'm curious. As far as I know, we separate our space dimensions (3D), and time dimension (1D) hence we got the words "we live in 4D with time being the fourth dimensions". Is it possible that time is actually not 1D? For example if time is 2D, maybe we are not just moving...

If what do we see, looks like realtime very fluid with an flow, in an apprehensible view for us, (I don't know how is the perception of time for an ant or an snail if there is), and yet the atoms look extremely fast to us, and the universe extremely slow, how could be the perception of the time...