Saturnin \s(a)-tur-nin, sat(u)-rnin\ as a boy's name is of Spanish origin, and the meaning of Saturnin is "saturn". Roman mythology: a god of agriculture, Saturn taught humans how to till the fields and enjoy the fruits of civilization. His festival was called the Saturnalia and is in late December. Lasting a week, it was the merriest and most popular of the Roman festivals. The planet Saturn, named after the god, was believed by the ancients to be made of lead. "Saturnine" means having the moody and sullen temperament of one born under the supposed astrological influence of Saturn.
Saturnin has 1 variant form: Saturnino.