e.g. = "exempli gratia" ("for the sake of example")

i.e. = "id est" ("that is")

N.B. = "Nota Bene" ("note well")

p.s. = "post scriptum" ("after what has been written")

QED = "Quod Erat Demonstrandum" ("which was needing to be demonstrated")

R.I.P. = "Requiescat in Pace" ("may he rest in peace")

cf. = "confer" ("bring together" or "compare")

A.D. = "anno Domini" ("in the year of our Lord")

P.M. = "Post Meridiem" ("after midday")

S.P.Q.R. = "Senatus Populusque Romanus" ("The Roman Senate and People")