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quality (EN)
noun, adjective

noun “quality”

singular quality, plural qualities or uncountable
  1. how good or bad something is
    The quality of their products has improved over time.
  2. a characteristic or feature that someone or something has
    Patience is an important quality for a teacher.
  3. the degree to which something is free from defects or flaws
    We must check the quality of each item before packaging.
  4. the ratio of the mass of vapor to the total mass in a mixture of liquid and vapor in thermodynamics
    The engineer measured the quality of the steam in the turbine.
  5. (UK) a newspaper with serious or high-quality content
    She prefers reading qualities over the tabloids.

adjective “quality”

base form quality, non-gradable
  1. of good quality; excellent
    They sell quality goods at affordable prices.