ulmin

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English

Alternative forms

Etymology

Latin ulmus (“elm”), +‎ -in: compare French ulmine.

Noun

ulmin (countable and uncountable, plural ulmins)

  1. (organic chemistry) A brown amorphous substance found in decaying vegetation.
    • 1966, NASA Technical Translation, page 10:
      The biological features of perennial grasses involve the decomposition of their residues during the period of domination of anaerobic processes, capable of producing active humus (ulminic acid and ulmin).

See also

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “ulmin”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)

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