quality

Etymology

From Middle English [Term?], from Old French qualité, from Latin quālitātem, accusative of quālitās, from quālis (“of what kind”), from Proto-Indo-European *kʷo- (“who, how”). Cicero coined qualitas as a calque to translate the Ancient Greek word ποιότης (poiótēs, “quality”), coined by Plato from ποῖος (poîos, “of what nature, of what kind”).

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. Audio (US) (file) 2019, VOA Learning English (public domain)
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.
   Something about his bearing was uncommitted, as though he were checking not for some bad quality he knew Feldman had, but for some good quality he was afraid he might have. 2010, Stanley Elkin, A Bad Man
3. (archaic) Position; status; rank.
   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 […] 1690, “The Preface to the Reader”, in A Full and True Relation of the Great and Wonderful Revolution That Hapned Lately in the Kingdom of Siam in the East-Indies, London: Randal Taylor, page i
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 bugs 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.
   It is argued that in the last ten years or so, quality broadsheet newspapers have become more like the tabloids. Anthony Sampson has argued that 'the frontier between the qualities and popular papers has virtually disappeared'. 1998, Bill Coxall, Lynton Robins, Robert Leach, Contemporary British Politics, page 164

adj

1. 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.
   A model for discriminating women! A "quality" coat in every sense! 1930, Stella Blum, Everyday Fashion of the Thirties as pictured in Sears Catalogs, published 1986, page 4
   I mean a lot of the money that obviously goes into universities and their libraries and their facilities and their academics and stuff but I mean I haven’t had a very quality degree to be honest. I think the quality of my education has been crap . . . a. 2003, John Ahier, John Beck, Rob Moore, quoting Harriet (a Cambridge University student), Graduate Citizens?: Issues of Citizenship and Higher Education, Routledge, published 2003, page 114
   For one I wanted to have what I considered a very quality tracking device. 2004, Vance M. Thompson, MD, edited by J. Kevin Belville and Ronald J. Smith, LASIK Techniques: Pearls and Pitfalls, SLACK Incorporated, page 187
   A very quality ball club; that was the Braves. 2008, Fay Vincent, quoting Carl Erskine, We Would Have Played for Nothing: Baseball Stars of the 1950s and 1960s Talk About the Game They Loved, Simon and Schuster, page 144