What is a brown amorphous substance found in decaying vegetation. Cf. Humin. [Formerly written ulmine.] called?
ulmin — A brown amorphous substance found in decaying vegetation. Cf. Humin. [Formerly written ulmine.]. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17 · Modified: 2026-07-17