plural of violet red

A signal or process with a frequency spectrum such that the spectral energy density is proportional to the frequency squared.

An American butterfly, Polygonia interrogationis, whose wings are mottled with various shades of red and brown and have violet tips.

plural of violet-tip

plural of shrinking violet

(chemistry) An artificial dye consisting of certain methyl halogen derivatives of rosaniline.

Viola pedata, an ornamental plant in the Violaceae family.

Viola canadensis, native to most of temperate and cool North America.

plural of blue violet

plural of Canada violet