# particulate

/pɝˈtɪkjəɫət/ (US) · /pətˈɪkjʊlˌeɪt/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/particulate
Updated: 2026-05-11

## Definition

tiny pieces of solid or liquid matter that float in the air, like dust or smoke. These small bits are often a type of pollution that can be bad for your lungs.

For teachers: microscopic solid or liquid matter suspended in the atmosphere or a gas stream. Often used in the plural to refer to pollutants like soot or dust that contribute to air quality degradation.

## Examples

- The air filter removes harmful particulates from the room.
- City officials issued a health warning because the level of fine particulates in the air reached dangerous levels during the heatwave.
- Environmental regulations have become increasingly strict regarding the emission of diesel particulates, as these microscopic fragments are known to penetrate deep into the respiratory system and cause long-term health issues.

## Usage notes

- Frequently used in the plural form ('particulates') when discussing environmental science or air pollution.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.