Ra is the Sun-god of Ancient Egypt.
Look up
-ra,
Ra,
ra, or
RA in Wiktionary, the free dictionary.
Ra or RA may also refer to:
Music
- A half-step below Re on the solfège musical scale
Government, military, and political organizations
Other businesses and organizations
- Ra (Javanese) (ꦫ), a letter in the Javanese script
- Ra (kana), the Japanese kana ら and ラ
- ረ and ራ, Amharic letters that can be read as variations of ra, also related to the Semitic resh
- Resh or rāʾ, 10th letter of Arabic alphabet
- Ռ or ṙa, the 28th letter in the Armenian alphabet
- र, ड़', ढ़, and र्ह, Devanagari letters which can be called ra, ṛa or rha
- Ԗ, the 23rd letter rha («ра») in the older (1924−1927) Moksha language Cyrillic script
- ர and ற, Tamil letters articulated as ra, tra or dra depending on the consonant complex
Other uses in science and technology
- or Ra, a popular parameter of roughness, defined as the average of absolute values of deviation from the mean of a surface
- Color rendering index (), a measure of the ability of a light source to reveal the colors of objects faithfully
- Radium, symbol Ra, a chemical element
- Rain (METAR weather code RA)
- Rayleigh number, in physics
- Relation algebra, a type of mathematical structure
- Right ascension, in astronomy
- Risk analysis, in several fields
- Resource adequacy, in electrical power grids
- Armen Ra, Iranian-born American musician
- Aron Ra, American author, podcaster, and atheist activist
- Ed Ra (born 1981), American politician