Air Quality Terms

noun a device or piece of equipment used to remove impurities or unwanted elements from something

verb to pass (a liquid, gas, light, or sound) through a device to remove unwanted elements

• The laboratory uses a special filter to separate impurities from the liquid solution.
• I always make sure to use a filter when brewing my coffee to get rid of any grounds.
• I need to put on a filter before I post anything on social media.
• It's important to filter out negative thoughts and focus on the positive aspects of life.

noun a person or thing that purifies, such as a device used to clean or filter something

• The air purifier effectively removes pollutants from the indoor environment.
• I bought a new purifier for my room to keep the air fresh.
• I need to get me one of those air purifiers to clean up this stuffy room.
• Reading a good book acts as a purifier for the mind, cleansing it of negative thoughts.

noun the lowest region of the Earth's atmosphere, where most weather phenomena occur

• The troposphere is the lowest layer of Earth's atmosphere, where most weather phenomena occur.
• Planes fly in the troposphere because it's the layer closest to the ground.
• I heard it's pretty turbulent in the troposphere today, so hold on tight!
• In the troposphere of social media, trends come and go quickly.