1. (noun) coefficient of expansion, expansivity
the fractional change in length or area or volume per unit change in temperature at a given constant pressure
Synonyms: expansiveness, expansivity, coefficient of expansion, effusiveness
2. (noun) expansiveness, expansivity
a quality characterized by magnificence of scale or the tendency to expand
Synonyms: expansiveness, expansivity, coefficient of expansion, effusiveness
3. (noun) effusiveness, expansiveness, expansivity
a friendly open trait of a talkative person
Synonyms: expansiveness, expansivity, coefficient of expansion, effusiveness
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