coffee ring

noun

: coffee cake in the shape of a ring

Example Sentences

Recent Examples on the Web The coffee ring effect occurs when a single liquid evaporates and the solids that had been dissolved in the liquid, like coffee grounds, form a telltale ring. —

Jennifer Ouellette, Ars Technica, 2 Dec. 2020 The shape of the droplets is also a factor in the coffee ring effect. —

Jennifer Ouellette, Ars Technica, 12 Aug. 2020 The top is scarred with coffee rings, the penny jar never full. —

oregonlive.com, 16 June 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'coffee ring.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.