Definition of ultra-fine in English:
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:
- British & World English dictionary
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