{s} steady, firm, fixed; not shaky; lasting; dependable, faithful; not susceptible to change; resistant to change; well-balanced in an emotional manner; (Chemistry) not readily decomposing
If an object is stable, it is firmly fixed in position and is not likely to move or fall. This structure must be stable. unstable
resistant to change of position or condition; "a stable ladder"; "a stable peace"; "a stable relationship"; "stable prices"
Chemical substances are described as stable when they tend to remain in the same chemical or atomic state. The less stable compounds were converted into a compound called Delta-A THC
So placed as to resist forces tending to cause motion; of such structure as to resist distortion or molecular or chemical disturbance; said of any body or substance