RA

noun13

1. •
   Initialism of rheumatoid arthritis.
2. •
   Initialism of research assistant.
3. •
   Initialism of resident assistant: a trained student leader, within a college or university, who is given the responsibility of supervising students living in a residence hall.
4. •
   Initialism of rear admiral, a rank in the Royal Navy.
5. •
   Initialism of Royal Academician: a member of the Royal Academy of Arts.
6. •
   Initialism of right atrium.
7. •
   Initialism of right ascension.
8. •
   Initialism of receptor agonist.
9. •
   Initialism of restricted area: an area that only authorized people can enter.
10. •
    (Philippines) Initialism of republic act.
11. •
    Initialism of rescue ambulance.
12. •
    Initialism of resolution advisory (a type of TCAS warning).
13. •
    Initialism of roughness average

phrase2

1. •
   Initialism of Arabicرَضِيَ ٱللهُ عَنْهُ (raḍiya llāhu ʕanhu, “may God be pleased with him”): a suffixal honorific used to honour companions of Muhammad (and by extension, the pious deceased in some usage).

   • Abu Bakr (RA), a companion of Muhammad (PBUH).
2. •
   Initialism of Arabicرَحْمَةُ ٱللهِ عَلَيْهِ (raḥmatu llāhi ʕalayhi, “may God have mercy on him”): a suffixal honorific used to honour the deceased.

   • Muhammad Ali Jinnah (RA) is known as the Father of Pakistan.

noun3

1. •
   A province of Fiji.
2. •
   Any of a series of moraines, in parts of Norway, that are long ridges covered with stones.
3. •
   Abbreviation of average roughness