gein [
gein]
[化] 水杨梅苷
gein \ge"in\ (j[=e]"[i^]n), n. [Gr. gh^ earth.] (Chem.)
See {Humin}.
Humin \Hu"min\, n. [L. humus the earth, ground.] (Chem.)
A bitter, brownish yellow, amorphous substance, extracted
from vegetable mold, and also produced by the action of acids
on certain sugars and carbohydrates; -- called also {humic
acid}, {ulmin}, {gein}, {ulmic} or {geic acid}, etc.