a degenerative disease of later life, characterised by a rhythmic tremor and muscular rigidity, caused by degeneration in the basal ganglia of the brain; Parkinson's disease.

that which does not occupy space and is not perceptible to the senses in any way; a thing which cannot be considered as 'matteṛ.

a worthless thing; an object which or a person who, is good for nothing.

that cannot be dissolved; not dissolving; not soluble; insoluble.