The fractional change in length or area or volume per unit change in temperature at a given constant pressure.

synonym: coefficient of expansion.

Polish: współczynnik rozszerzalności cieplnej

A quality characterized by magnificence of scale or the tendency to expand.

synonym: expansiveness.

Polish: ekspansywność

A friendly open trait of a talkative person.

synonyms: effusiveness, expansiveness.

Polish: wylewność