nəˈstərshəm, naˈ-, naaˈ-, -stə̄sh- noun
Etymology: New Latin, from Latin nasturtium, nasturcium, a cress, perhaps from nasus nose + -turtium, -turcium (from torquēre to twist); from its strong smell — more at nose , torture
1. capitalized : a genus of aquatic herbs (family Cruciferae) with succulent smooth stems, often pinnate leaves, and flowers with white petals twice as long as the sepals — see watercress 1
2. -s : any plant of the genus Tropaeolum (as T. majus and T. minus )
3. -s
a. : nasturtium red
b. : cadmium yellow
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