Unsymmetrical

According to the MLS proposal, the rockets would use unsymmetrical dimethylhydrazine (UDMH) for the second stage of their launch sequence.

In traditional games, the unsymmetrical vertical orientation I-, Z-, and S-pieces will fill the same columns for each clockwise and counter clockwise rotation.

On contact with the surface, a slight jet asymmetry caused an unsymmetrical raised surface that fed back to the jet origin and began a process that looked like a weak version of the flow instability figure.

The method is effective for generating symmetrical ethers, but not unsymmetrical ethers, since either OH can be protonated, which would give a mixture of products.