WordReference Random House Unabridged Dictionary of American English © 2026
sin•i•grin
(sin′i grin),USA pronunciation n. [Chem.]
- Chemistrya colorless, crystalline, water-soluble solid, KC10H16NO9S2·H2O, found chiefly in the seeds of the black mustard, that deters some insect predators. Also called potassium myronate.
- Neo-Latin Sin(apis n)igr(a) species yielding black mustard seed (literally, black mustard; see sinapine, Negro) + -in2
- 1875–80
'sinigrin' also found in these entries (note: many are not synonyms or translations):