16 definitions found for ra

Ra RA, as an inseparable prefix or preposition, is the Latin re, coming to us through the Italian and French, and primarily signifying again, repetition. [See Re.]

Ra n 1: an intensely radioactive metallic element that occurs in minute amounts in uranium ores [syn: radium, Ra, atomic number 88] 2: ancient Egyptian sun god with the head of a hawk; a universal creator; he merged with the god Amen as Amen-Ra to become the king of the gods [syn: Ra, Re] 3: (astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere; "one hour of right ascension equals fifteen degrees" [syn: right ascension, RA, celestial longitude]

ra - person

Ra I. noun Etymology: Egyptian r‘ Date: 1877 the Egyptian sun god and chief deity II. symbol radium

ra abbreviation range

RA abbreviation 1. regular army 2. right ascension 3. Royal Academician; Royal Academy

RA
abbr.
1 a (in the UK) Royal Academy. b (in the UK) Royal Academician.
2 (in the UK) Royal Artillery.
3 right ascension.

Ra
symb. Chem. the element radium.

ra
symb. Chem. the element radium.

RA abbr. 1 a (in the UK) Royal Academy. b (in the UK) Royal Academician. 2 (in the UK) Royal Artillery. 3 right ascension.

Ra symb. Chem. the element radium.

RA Registration Authority (PKI, ITU, cryptography)

RA Remote Access (BBS)

Ra Ra, n. A roe; a deer. [Obs.] --Chaucer.

Ra- Ra- A prefix, from the Latin re and ad combined, coming to us through the French and Italian. See Re- and Ad-.

24 Moby Thesaurus words for "Ra": Amen-Ra, Anubis, Apollo, Bast, Helios, Horus, Hyperion, Isis, Khem, Min, Neph, Nephthys, Nut, Osiris, Phoebus, Phoebus Apollo, Ptah, Savitar, Set, Shamash, Sol, Surya, Thoth, Titan