volatile

Adjective
  1. Evaporating readily at normal temperatures and pressures (synset 302529611)
    "volatile oils"; "volatile solvents"
    also: inconstant - likely to change frequently often without apparent or cogent reason; variable
    referred to in: chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
    similar to: evaporable, vaporific, vaporizable, vapourific, vapourisable, volatilisable, volatilizable - (used of substances) capable of being volatilized
  2. Liable to lead to sudden change or violence (synset 302300305)
    "an explosive issue"; "a volatile situation with troops and rioters eager for a confrontation"
    similar to: unstable - lacking stability or fixity or firmness
    same as: explosive
  3. Marked by erratic changeableness in affections or attachments (synset 300587124)
    "fickle friends"; "a flirt's volatile affections"
    similar to: inconstant - likely to change frequently often without apparent or cogent reason; variable
    same as: fickle
  4. Tending to vary often or widely (synset 300347949)
    "volatile stocks"; "volatile emotions"
    similar to: changeable, changeful - such that alteration is possible; having a marked tendency to change
Noun
  1. A volatile substance;
    A substance that changes readily from solid or liquid to a vapor (synset 115118302)
    "it was heated to evaporate the volatiles"
    is a type of: substance - the real physical matter of which a person or thing consists

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