[French sinapisme, from Late Latin sināpismus, from Greek sināpismos, use of a mustard plaster, from sināpizein, to apply a mustard plaster, from sināpi, mustard, variant of earlier nāpu; probably akin to Middle Persian span- in spandān, mustard (Middle Persian dān, seed) and Sanskrit sarṣapaḥ, mustard, and ultimately of non-Indo-European origin.]