R.A.

1. rear admiral.

2. Astron. right ascension.

3. royal academician.

4. Royal Academy.

* * *

Ra «rah», noun.

the sun god and supreme deity of ancient Egypt, typically represented as a man with the head of a hawk, bearing the sun on his head. Also, Re.

╂[< Egyptian r' the sun]

Ra (no period),

radium (chemical element).

RA (no periods),

Regular Army.

R.A.,

1. rear admiral.

2. Regular Army.

3. Astronomy. right ascension.

4. a) Royal Academician (member of the Royal Academy). b) Royal Academy (of Great Britain).

5. Royal Artillery (of Great Britain).