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Expansivity (Noun)

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

Nouns denoting quantities and units of measure.

The expansivity of a gas is directly proportional to its molar mass, making it a useful property in determining the identity of a gas.
Materials with high expansivity, such as most metals, tend to expand significantly with temperature changes.
In thermal engineering, understanding the expansivity of materials is crucial in designing systems that operate under varying temperature conditions.
Water exhibits unusual expansivity properties, contracting when cooled from 4°C to 0°C and expanding when heated above 4°C.
Measuring the expansivity of a material allows researchers to better understand its thermal behavior and make informed decisions about its potential applications.

A quality characterized by magnificence of scale or the tendency to expand; "the expansiveness of their extravagant life style was soon curtailed".

Nouns denoting attributes of people and objects.

The expansivity of the city's architecture was awe-inspiring, with grand buildings and sweeping vistas that seemed to stretch on forever.
Her expansivity of spirit was contagious, drawing people to her with an infectious enthusiasm and energy.
The expansivity of the desert landscape was humbling, a vast expanse of sand and rock that seemed to swallow up all human endeavors.
The company's expansivity of vision had led them to invest in a wide range of innovative projects, some of which had paid off spectacularly.
The expansivity of the professor's mind was legendary, encompassing a vast range of subjects and disciplines that he could draw upon at will.