PLUS

In Algebra, the additive or positive sign -j-, which, being placed between two quantities, signifies that they are to be taken collectively, or added together. According to Dr. Hutton, this character was first used by Stifelius, as a contraction of the letter p, the initial of plus. PLUTO. {Gr.TlxivTm.) Called also Hades {M^y.?), A i done us {A'i^miv;) by the Greeks, or Orcus by the Romans, was the brother of Jupiter and Neptune, and lord of the infernal regions. He is not, like his brothers, celebrated for amours, but remained faithful to Proser pine, whom he carried away from the plains of Sicily, and made his queen. Pluto is represented as an old man with a dignified but severe countenance, holding in his hand a two-pronged fork. [s. 953]