That which is required for continued existence or function.
Blood that is needed for continued life; blood regarded as the seat of life.
A form of matter that has constant chemical composition and characteristic properties.
Physical matter; material.
Material possessions; estate; property; resources.
Hypostasis.
Drugs (illegal narcotics)
Substantiality; solidity; firmness.
The essential part of anything; the most vital part.
To give substance to; to make real or substantial.