RA — English Dictionary

Proper noun

1. The Provisional Irish Republican Army.

   Examples

   Up the RA!

   Good old Austin [Currie] was quick to say we hadn't and it wasn't a vote for the RA.

   More examples (2)

   If he joins the RA he sees himself as a free man one day walking down the streets of New York.

   Aside from the RA inner core (of around 200 or so), AFA's periphery – not all of whom supported RA's Irish Republicanism – comprised students, anarchists, non-aligned anti-fascists, former hunt saboteurs, and even football casuals.

Noun

1. (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

   Synonyms

   right ascensioncelestial longitude

   Broader terms

   angular distance

   Examples

   one hour of right ascension equals fifteen degrees