Definition of "quality" in English

noun

1. (uncountable) Level of excellence.

   • This school is well-known for having teachers of high quality.
   • Quality of life is usually determined by health, education, and income.
   • He called for China’s cooperation in efforts to improve air quality.

2. (countable) Something that differentiates a thing or person.

   • One of the qualities of pure iron is that it does not rust easily.
   • While being impulsive can be great for artists, it is not a desirable quality for engineers.
   • Security, stability, and efficiency are good qualities of an operating system.

3. (archaic) Position; status; rank.

4. (archaic) High social position. (See also the quality.)

   • A peasant is not allowed to fall in love with a lady of quality.
   • Membership of this golf club is limited to those of quality and wealth.

5. (uncountable) The degree to which a man-made object or system is free from faults and flaws, as opposed to scope of functions or quantity of items.

6. (thermodynamics) In a two-phase liquid–vapor mixture, the ratio of the mass of vapor present to the total mass of the mixture.

7. (emergency medicine, countable) The third step in OPQRST where the responder investigates what the NOI/MOI feels like.

   • To identify quality try asking, "what does it feel like?".

8. (countable, UK, journalism) A newspaper with relatively serious, high-quality content.

adjective

1. (occasionally proscribed) (attributive) Being of good worth, well made, fit for purpose; of high quality.

   • We only sell quality products.
   • That was a quality game by Jim Smith.
   • A quality system ensures products meet customer requirements.