volatile
/ˈvɑ.lə.təl/ noun C2- A chemical or compound that changes into a gas easily.
- A variable that is volatile, i.e. has its associated memory immediately updated with any change in value.
Plural volatiles
From the library
He could distinguish amid the perfumes of the roses and heliotropes in the flower-stands, the sharp and fragrant odor of volatile salts, and he noticed in one of the chased cups on the mantle-piece the countess’s smelling-bottle, taken from its shagreen case, and exclaimed in a tone of uneasiness, as he entered:
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