Superseded spelling of reator. (Superseded in Brazil by the 1943 spelling reform and by the Portuguese Language Orthographic Agreement of 1990 elsewhere. Still used in countries where the agreement hasn’t come into effect.)

true, real / that has physical existence; real / being a member of the set of real numbers; real

a real number

(relational) monarchy; royal; regal

a former Spanish currency / the current Brazilian currency

a former currency of Portugal and its colonies (the plural later became réis)

(Brazil, Internet slang) video response; video reply (a video replying to another video)

real world

(mathematics) real number (limit of a convergent sequence of rational numbers)

A city and municipality of Faro district, Portugal