a. The hue of the long-wave end of the visible spectrum, evoked in the human observer by radiant energy withwavelengths of approximately 630 to 750 nanometers; any of a group of colors that may vary in lightness andsaturation and whose hue resembles that of blood; one of the additive or light primaries; one of thepsychological primary hues.
b. A pigment or dye having a red hue.
c. Something that hashue.


a. often A Communist.
b. A revolutionary activist.
3. The condition of being in debt or operating at a loss: The firm has been in the red all year.

adj. red·der, red·dest

1. Having a color resembling that of blood.
2. Reddish in color or having parts that are reddish in color: dog;oak.


a. Having a reddish or coppery skin color.
b. Often Offensive Of or being a Native American.
4. Having a ruddy or flushed complexion: red with embarrassment.
5. Relating to or beingstate.
6. often Communist.

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