quality

1. (uncountable) Level of excellence.Examples: "This school is well-known for having teachers of high quality."; "Quality of life is usually determined by health, education, and income."; "“I'll tell you what you're going to do. Have you a clean shirt?” “Several.” “And a toothbrush?” “Two, both of the finest quality.” “Then pack them. You're coming to Brinkley tomorrow.”"uncountable

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

3. (archaic) Position; status; rank.Examples: "The firſt Solemn Embaſſy that the French King ſent to the late King of SIAM, was in the Year 1685, by Monſieur de Chaumont, who went in Quality of Ambaſſador Extraordinary […]"archaiccountableuncountable

4. (archaic) High social position. (See also the quality.)Examples: "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."archaiccountableuncountable

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.uncountable

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