RO2 R2O5 RO3 R2O7 RO4 ----------------------------------------------- n.
iptic orbit; a comet that has been seen at two of its approaches to the sun. -- Periodic function (Math.), a function whose values recur at fixed intervals as the variable uniformly increases. The trigonomertic functions, as sin x, tan x, etc., are periodic functions. Exponential functions are also periodic, having an…
ROLE n.
A part, or character, performed by an actor in a drama; hence, a part of function taken or assumed by any one; as, he has now taken the rôle of philanthropist. Title rôle, the part, or character, which gives the title to a play, as the part of Hamlet in the play of that name.
ROSTRUM n.
The Beaks; the stage or platform in the forum where orations, pleadings, funeral harangues, etc., were delivered; -- so called because after the Latin war, it was adorned with the beaks of captured vessels; later, applied also to other platforms erected in Rome for the use of public orators.