Means "excellent" in Ancient Latin. Its etymology is uncertain. It can derive from the Greek root opti- meaning 'light, sight'. Another possible etimology is from Ancient Latin optàre "to choose, to desire" with the meaning of "the chosen one, the superior one". A further Latin root is from ops that means "wealth, power" so Optimus would mean "the wealthiest".In popular culture, this was used by the heroic Autobot leader Optimus Prime in 'Transformers'.