mass (physics); quality
Meanings
2 senses · 7 examplesnoun
mass (physics); quantity of matter
formalA fundamental property in physics, measured in kilograms. In science, it's distinct from 'weight', which measures gravitational force. As a scientific term, it's a scalar quantity and constant.
According to Newton's second law, an object's mass is inversely proportional to its acceleration.
The mass of this proton is extremely small.
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The mass of the Earth is approximately 5.97 × 10^24 kilograms.
noun
quality; standard; degree of excellence
neutralWidely used in business, manufacturing, education, and daily life to assess the merit, performance, or grade of products, services, or work.
This factory places great importance on product quality.
This training greatly improved our service quality.
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The writing quality of this report is very high.
Air pollution affects residents' quality of life.