volatile oil of mustard
a volatile oil distilled from the seeds of black mustard (Brassica nigra); it consists predominantly of allyl isothiocyanate and is used as a strong counterirritant and rubefacient.

Medical dictionary. 2011.

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  • oil of mustard — see volatile o. of mustard …   Medical dictionary

  • Mustard oil — The term mustard oil is used for three different oils that are made from mustard seeds: A fatty vegetable oil resulting from pressing the seeds, An essential oil resulting from grinding the seeds, mixing them with water, and extracting the… …   Wikipedia

  • mustard — /mus teuhrd/, n. 1. a pungent powder or paste prepared from the seed of the mustard plant, used as a food seasoning or condiment, and medicinally in plasters, poultices, etc. 2. any of various acrid or pungent plants, esp. of the genus Brassica,… …   Universalium

  • Mustard (condiment) — Mustard seeds (top left) may be ground (top right) to make different kinds of mustard. The other four mustards pictured are a simple table mustard with turmeric coloring (center left), a Bavarian sweet mustard (center right), a Dijon mustard… …   Wikipedia

  • mustard oil — noun oil obtained from mustard seeds and used in making soap • Hypernyms: ↑oil * * * noun 1. : an oil from mustard: as a. or mustard seed oil : a greenish yellow bland semidrying fatty …   Useful english dictionary

  • mustard — 1. The dried ripe seeds of Brassica alba (white m.) and B. nigra (black m.) (family Cruciferae). 2. SYN: m. gas. [O.Fr. moustarde, fr. L. mustum, must] black m. the dried ripe seed of Brassica nigra or of B. juncea; it is the source of allyl… …   Medical dictionary

  • Mustard oil — Mustard Mus tard, n. [OF. moustarde, F. moutarde, fr. L. mustum must, mustard was prepared for use by being mixed with must. See {Must}, n.] 1. (Bot.) The name of several cruciferous plants of the genus {Brassica} (formerly {Sinapis}), as {white… …   The Collaborative International Dictionary of English

  • Mustard — Mus tard, n. [OF. moustarde, F. moutarde, fr. L. mustum must, mustard was prepared for use by being mixed with must. See {Must}, n.] 1. (Bot.) The name of several cruciferous plants of the genus {Brassica} (formerly {Sinapis}), as {white mustard} …   The Collaborative International Dictionary of English

  • mustard oil — Term applied to any of the organic isothiocyanates in general, but more specifically to allyl isothiocyanate; such oils are metabolically convertible to thiocyanates and may thus lead to goiter. expressed m. the fixed oil expressed from the seeds …   Medical dictionary

  • black mustard — n 1) a yellow flowered annual Eurasian herb (Brassica nigra) that is a source of table mustard 2) the dried ripe seed of black mustard or a relative (Brassica juncea) that was formerly much used in medicine as a rubefacient and emetic * * * brown …   Medical dictionary

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