Definition of ultra-fine in English:

ultra-fine

Syllabification: ul·tra-fine

adjective

Extremely fine in size, texture, composition, etc. the ultra-fine particles emitted by diesel vehicles the fiber in merino wool is ultra-fine
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.

Definition of ultra-fine in:

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