| 1. | the syllable used for the second tone of a diatonic scale. |
| 2. | (in the fixed system of solmization) the tone D. Compare sol-fa (def. 1). |
| rhenium. |
| 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. |
| real estate. |
| 1. | real estate. |
| 2. | Reformed Episcopal. |
| 3. | Right Excellent. |
| right end. |
| a sun god of Heliopolis, a universal creator worshiped throughout Egypt (typically represented as a hawk-headed man bearing on his head the solar disk and the uraeus). |
| 1. | a cupronickel coin and monetary unit of India, Nepal, and Pakistan, equal to 100 paise. Abbreviation: R., Re. |
| 2. | a cupronickel coin and monetary unit of Mauritius, the Seychelles, and Sri Lanka, equal to 100 cents. |
| 3. | Also called rufiyaa. a coin and monetary unit of the Maldives, equal to 100 laris. |
| 4. | a former monetary unit of Bhutan, equal to 100 naye paise. |

Re 1 (rā) n. Mythology Variant of Ra1. |
| Re 2 The symbol for the element rhenium. |
| RE abbr. real estate |
rhe·ni·um (rē'nē-əm) n. Symbol Re A rare, dense, silvery-white metallic element with a very high melting point used for electrical contacts and with tungsten for high-temperature thermocouples. Atomic number 75; atomic weight 186.2; melting point 3,180°C; boiling point 5,627°C; specific gravity 21.02; valence 1, 2, 3, 4, 5, 6, 7. See Table at element. [From Latin Rhēnus, the Rhine.] |
Ra
The symbol for the element radium.
Re
The symbol for the element rhenium.
RE abbr.
right eye
re- pref.
Again; anew: rebreathing.
Backward; back: recurvation.
| radium (rā'dē-əm) Pronunciation Key
Symbol Ra A rare, bright-white, highly radioactive element of the alkaline-earth group. It occurs naturally in very small amounts in ores and minerals containing uranium, and it is naturally luminescent. Radium is used as a source of radon gas for the treatment of disease and as a neutron source for scientific research. Its most stable isotope is Ra 226 with a half-life of 1,622 years. Atomic number 88; melting point 700°C; boiling point 1,737°C; valence 2. See Periodic Table. |
| Re
The symbol for rhenium. |
| rhenium (rē'nē-əm) Pronunciation Key
Symbol Re A very rare, dense, silvery-white metallic element with a very high melting point. It is used to make catalysts and electrical contacts. Atomic number 75; atomic weight 186.2; melting point 3,180°C; boiling point 5,627°C; specific gravity 21.02; valence 1, 2, 3, 4, 5, 6, 7. See Periodic Table. |
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[The Jargon File]
(1999-02-08)
| re Reprint of an Amendment |
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