noun, adjective, red⋅der, red⋅dest.| 1. | any of various colors resembling the color of blood; the primary color at one extreme end of the visible spectrum, an effect of light with a wavelength between 610 and 780 nm. |
| 2. | something red. |
| 3. | (often initial capital letter ) a radical leftist in politics, esp. a communist. |
| 4. | Informal. red light (def. 1). |
| 5. | Informal. red wine: a glass of red. |
| 6. | Also called red devil, red bird. Slang. a capsule of the drug secobarbital, usually red in color. |
| 7. | of the color red. |
| 8. | having distinctive areas or markings of red: a red robin. |
| 9. | of or indicating a state of financial loss or indebtedness: the red column in the ledger. |
| 10. | radically left politically. |
| 11. | (often initial capital letter ) communist. |
| 12. | of, pertaining to, or characteristic of North American Indian peoples: no longer in technical use. |
| 13. | in the red, operating at a loss or being in debt (opposed to in the black ): The newspaper strike put many businesses in the red. |
| 14. | paint the town red. paint (def. 16). |
| 15. | see red, Informal. to become very angry; become enraged: Snobs make her see red. |
| var. of re- before a vowel or h in some words: redintegrate. |
| a native English suffix, denoting condition, formerly used in the formation of nouns: hatred; kindred. |

| 1. | a river flowing E from NW Texas along the S boundary of Oklahoma into the Mississippi River in Louisiana. ab. 1300 mi. (2095 km) long. |
| 2. | Also called Red River of the North. a river flowing N along the boundary between Minnesota and North Dakota to Lake Winnipeg in S Canada. 533 mi. (860 km) long. |
| 3. | Songka. |
| a prefix, occurring originally in loanwords from Latin, used with the meaning “again” or “again and again” to indicate repetition, or with the meaning “back” or “backward” to indicate withdrawal or backward motion: regenerate; refurbish; retype; retrace; revert. |
| a river in SE Asia, flowing SE from SW China through Indochina to the Gulf of Tonkin. 500 mi. (800 km) long. |
Red
A term relating to a negative balance on a company's financial statements.
Investopedia Commentary
The phrase "in the red" is used widely to refer to companies that have not been profitable within their last accounting period. This term is derived from the color of ink used to by accountants to enter a negative figure on a company's financial statements.
See also: Black
r
Used in the dividend column of stock transaction tables in newspapers to indicate the amount of dividends declared or paid in the preceding 12 months plus a stock dividend: PE Cp .25r.
Used in mutual fund transaction tables in newspapers to indicate funds that levy a deferred sales charge when shares are sold: IDS Inc r.
Used in bond transaction tables in newspapers to indicate a registered security. Although most bonds are registered, this symbol is used when a distinction is necessary, as when a bond trades in registered and in bearer form: NoPac 3.47r.
red
R abbr.
radical (usually an alkyl or aryl group)
respiration
respiratory exchange ratio
or r roentgen
re- pref.
Again; anew: rebreathing.
Backward; back: recurvation.
| R
The symbol for resistance. |
Red
(Or "REDL") A language proposed by Intermetrics to meet the Ironman requirements which led to Ada.
["On the RED Language Submitted to the DoD", E.W. Dijkstra, SIGPLAN Notices 13(10):27 (Oct 1978)].
["RED Language Reference Manual", J. Nestor and M. van Deusen, Intermetrics 1979].
(1995-01-19)
red
In addition to the idioms beginning with red, also see catch red-handed; in the red; not worth a dime (red cent); paint the town red; see red.