An extremely rare variant plural form referring to alluvial deposits or sedimentary material.
A double plural construction from Latin, combining 'alluvium' with an additional Latin plural ending. This form is virtually obsolete and appears only in historical scientific texts as an example of competing plural conventions.
This word is a ghost in geology—it barely exists in modern usage, making it a perfect example of how scientific language evolves and standardizes over time, with competing forms dropping out of favor.
Complete word intelligence in one call. Free tier — 50 lookups/day.