transientsubstance
nounUK /ˈtrænziənt ˈsʌbstəns/
US /ˈtrænʃənt ˈsʌbstəns/
A transient substance is something that only stays for a short time and then goes away.
The fog was a transient substance that disappeared by noon.
OTHER MEANINGS
2. In chemistry, a substance that exists only briefly during a reaction.
The transient substance formed for a split second before turning into the final product.
3. A material that moves through a place without staying.
Scientists tracked the transient substance as it flowed through the pipe.
4. Something that appears for a short time in a system or environment.
The transient substance in the water broke down within minutes.