Mmm... I don't know how to define it. Let me try and describe what I feel about the multidemional-ness of thinking. "A thought" has so many facades and layers. It feels more like a ball, a bubble with fuzzy boundary. Thoughts have different sizes. And sometimes they feel like a big blob of haze and I can't tell whether it is just one thought or a cluster of it. The moment I want to capture it by verbalizing it (in whatever language), it is poked and then bursts out to all directions in strains. Some of them are clearer/brighter/more concrete than the others. I can then follow the most attractive one or a few adjacent ones that are within my grasp and jot them down. After that, the rest will often become too blur for discernment or only a few sporadic sparkles left. At times I can trace them back and toy with them. However, more often than not, my attention turns to some other totally unrelated thoughts that pop up.
The above is one of the ways to depict it. I said that thoughts had layers. What I portrayed above is only the layer on the conscious level. What goes on on the subconscious would be beyond words. And then there are the layers of rationality and emotion. The former is the aspect of the thought that appeals to our logical sense and the latter to our feelings around it. They have significant effects on how we respond to a thought. Or I can also say how thoughts are colored by these two factors.
I also notice that some thoughts came in a specific langauge and some other don't. I can think in Chinese, my mother tongue, and/or English, my first foreign language. When I switch languages with the thoughts that came in a specific langauge, it somehow mutates differently. Based on my own experience, I am certain that language has a moulding effect on my thinking. It does facilitate weaving abstract ideas together to take form. Paradoxically, it also limits them in this process.
Thought is such a complex phenomenon that I could only catch a glimpse of it and marvel at its intricacies. Well, my limited vocabulary and diction will never do justice in revealing its totality...
I am not sure the above answer is what you expect. Just hope it could provide some food for thought. ...^_^...