(comparative more colloquial, superlative most colloquial) ( 1 linguistics) Denoting a manner of speaking or writing that is characteristic of familiar conversation; informal.  Of or pertaining to a conversation; conversational or chatty.
Cotton dust is often present in the air during cotton handling and processing. Cotton dust may contain many substances including ground-up plant matter, fiber, bacteria, fungi, soil, pesticides, non-cotton matter, and other contaminants that may have accumulated during growing, harvesting, and subsequent processing or storage periods.
Risk of Interstitial Lung Diseases. Coal mine dust. As already noted, coal mine dust exposure can cause COPD. However, it is best known for causing coal workersâ pneumoconiosis (CWP), a type of lung disease affecting the tissues and gas-exchange surface of the lung (interstitial lung disease).