What context can I use each word in?
Learn when and how to use these words with these examples!
illuvial
Example
The illuvial layer of the soil contains a high concentration of clay. [illuvial: adjective]
Example
Illuviation is the process by which minerals are deposited in the subsoil. [illuviation: noun]
alluvial
Example
The alluvial plain was formed by the river's meandering over time. [alluvial: adjective]
Example
Alluvium is the sediment deposited by flowing water. [alluvium: noun]
Good things to know
Which word is more common?
Alluvial is more commonly used than illuvial in everyday language. Alluvial has a wider range of applications and is more familiar to most people, while illuvial is a more technical term used primarily in soil science.
What’s the difference in the tone of formality between illuvial and alluvial?
Illuvial is a more technical and scientific term, and is therefore more formal than alluvial. However, both words can be used in formal contexts depending on the subject matter and audience.