Another Word For Ppm

Meaning

PPM stands for "parts per million," which is a unit of measurement used to describe the concentration of one substance in a million parts of another. It is commonly used in fields such as chemistry, environmental science, and engineering to quantify small concentrations of pollutants, chemicals, or other compounds in air, water, or soil.

Synonyms

• Milligrams per liter (mg/L)
• Micrograms per cubic meter (µg/m³)
• Concentration ratio

Antonyms

• Absence
• Zero concentration
• Dilution

Etymology

The term "parts per million" is derived from the words "part," "per," and "million." It indicates a ratio, where "part" refers to the amount of a substance and "million" indicates the total number of parts in which that substance is measured.

Examples

1. The water quality report showed that the lead concentration was at 15 ppm, which is above the safe limit.
2. In air quality studies, nitrogen dioxide levels are often expressed in ppm to indicate pollution levels.
3. The laboratory found the pesticide residues in the soil were at 4 ppm, necessitating further investigation.