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illuvial

Upper-Intermediate (B2)

IPA: /ɪˈluːviəl/

KK: /ɪˈluːviəl/

adjective
Definition

Relating to the process of illuviation, which is the movement of dissolved materials from one layer of soil to another.


Example

The illuvial layer of soil is rich in nutrients that have leached down from the upper layers.


Conversation
Sloth A
Did you know that some soils contain illuvial materials?
Sloth B
No, I hadn't heard of that before. What does it mean?
Sloth A
It refers to organic matter that has settled from above layers, like clay.
Sloth B
That's interesting! I guess it plays a role in how plants grow.

Synonyms & Antonyms
Synonyms
depositional
sedimentary
accumulative
Antonyms
eroded
washed
dissolved
Root Explanation

Illuvial is derived from "illuvi" (from Latin "illuvius", meaning washed down) and the suffix "-al" (meaning pertaining to). The term refers to materials that have been washed down or deposited by water, particularly in soil contexts.

Memory Tip

Think of materials that have been 'washed down' ('illuvi') and how they are 'pertaining to' ('-al') the soil. This helps you remember that 'illuvial' relates to deposits formed by water.

Visually Confused Words
diluvial
alluvial
ingluvial
colluvial
pluvial
fluvial
eluvial
diluvia
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