Definition of ultra-fine in English:

ultra-fine

Line breaks: ultra-fine

adjective

  • Extremely fine in size, texture, composition, etc.: ultra-fine particles which are invisible to the naked eye the sand is ultra-fine, like dust
    More example sentences
    • Just's team focused on emissions of ultrafine soot particles linked to some of the most serious health problems.
    • We studied the ultrafine dust (or particulate matter) found in an underground station in Europe.
    • The collection features hand-knitted apparel, accessories and jewelry and uses exclusively European yarns with high natural content like merino wool, linen, silk, cotton or ultra fine mohair.

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Word of the day grotesquerie
Pronunciation: grəʊˈtɛskəri
noun
grotesque quality or grotesque things collectively