nonhumus

English

Etymology

From non- +‎ humus.

Noun

nonhumus (uncountable)

1. That which is not humus (certain organic compounds in soil).
   • 1964, Proceedings of the Annual Biology Colloquium, volume 25, page 59:

     However, since there is no clear-cut distinction between humus and nonhumus, the term humus will be used interchangeably with soil organic matter for the purposes of this discussion.