unsymmetrical
- s lacking symmetry
- s having unsymmetrical parts or unequal dimensions or measurements
- Instead it burns storable liquid fuels (a mixture of hydrazine and unsymmetrical dimethylhydrazine with nitrogen tetroxide as oxidizer) that are "hyper-golic," ignited .
- Bell gets around the problem by using hypergolic fuels (unsymmetrical dime-thylhydrazine and inhibited red fuming nitric acid) that ignite spontaneously as soon as they come in .
- Receding foreheads, massive jaws, prognathous chins, unsymmetrical skulls.