q.v., quod vide=Which see; quantum vis=As much as you will.
R., rex, regina=King, Queen.
R., recipe=Take.
R., Reau. Réaumur's thermometric scale.
R.A. Royal Academy or Academician; Royal Artillery.
Rabb. Rabbinical.
R.A.C. Royal Arch Chapter.
Rad. Radical.
rad., radix=Root.
R.A.M. Royal Academy of Music.