Ἥφαιστος

The etymology of Hephaestus is a dead end. Linguists have proposed connections to the Greek verb haptō ('to kindle') and to various pre-Greek roots, but nothing holds up under scrutiny. The name appears on Linear B tablets from Knossos as a-pa-i-ti-jo, placing it in the Mycenaean Bronze Age around 1400 BCE. Like Artemis and Athena, Hephaestus probably carries a pre-Greek name from a stratum of language that was already ancient when the first Greek speakers arrived. The god of the forge was named in a tongue that time has swallowed.

The Romans identified Hephaestus with their own fire god, Vulcanus — Vulcan. The island of Vulcano, in the Aeolian archipelago north of Sicily, was believed to be Vulcan's smithy. When the island erupted, the Romans said the god was working his forge. In 1610, the word volcano entered English directly from Italian vulcano, which descended from the god's Latin name. Every volcanic eruption on every planet in the solar system is described using a word that traces to a Roman fire deity.

Hephaestus occupied a strange position on Olympus. He was the only god who labored. While other deities fought, seduced, and schemed, Hephaestus built things: Achilles's shield, Pandora's body, the golden robots that served him in his workshop. Homer describes these automata in the Iliad — self-moving tripods and golden handmaidens with intelligence. The god of craft invented science fiction twenty-seven centuries before the genre had a name.

The word vulcanize, coined in 1846 to describe Charles Goodyear's process of hardening rubber with heat, comes from the same divine root. So does the Star Trek character Spock's home planet — Gene Roddenberry named Vulcan after the Roman god, though he made the inhabitants devotees of logic rather than fire. A pre-Greek name of unknown meaning became a Latin fire god, became a geological term, became a chemical process, became a fictional planet. Hephaestus would have appreciated the craftsmanship of that journey.