The Collaborative International Dictionary
Legumin
Legumin \Le*gu"min\ (-m[i^]n), n. [Cf. F. l['e]gumine.] (Physiol. Chem.) An albuminous substance resembling casein, found as a characteristic ingredient of the seeds of leguminous and grain-bearing plants.
Wiktionary
legumin
n. (context protein English) Any globular protein, resembling casein, found mostly in legumes or grains
Wikipedia
Usage examples of "legumin".
I infer from a remark by Gerhardt* that legumin is present in peas "in combination with an alkali, forming an incoagulable solution," and this would mingle with boiling water.
Syntonin and legumin excite the leaves so powerfully and quickly that there can hardly be a doubt that both would be dissolved by the secretion.