The word “magnet” comes from ancient Greek: ho Magnes lithos, meaning “the Magnesian stone.” Magnesia was a region in Thessaly, in central Greece, where naturally magnetic iron ore was found as early as the 8th century B.C. The people who lived there, the Magnetes, gave their name to both the region and the mysterious stone that could pull iron toward it.
The Magnesian Stone of Thessaly
The Magnetes were among the oldest settled peoples in Greece, referenced as far back as Homer in the 8th century B.C. They lived around Ossa mountain in central Thessaly, a landscape rich in magnetite, the iron oxide mineral responsible for natural magnetism. The Greeks noticed that certain dark, heavy stones from this region could attract pieces of iron, and they named the stones after the land where they were found.
Pliny the Elder, writing in the 1st century A.D., noted that Thessalian magnetite from Magnesia was second in quality only to magnetite from Ethiopia. Modern geological surveys of the area have confirmed significant magnetite deposits on the slopes of Mavrovouni mountain, near where the ancient Magnetes settled. These high-quality deposits likely correspond to the ones Pliny described nearly two thousand years ago.
The Legend of Magnes the Shepherd
There’s also a more colorful origin story. The Roman author Pliny, drawing on the earlier Greek poet Nicander, recorded a legend about a shepherd named Magnes who was herding his flocks on Mount Ida. As he walked across the hillside, the iron nails in his shoes and the iron tip of his staff suddenly stuck to the ground. The rocks beneath him were rich in magnetic ore, and the stone was named after him.
Whether Magnes was a real person, a mythical hero, or simply a personification of the Magnesian people is impossible to untangle at this distance. The ancient Greeks themselves weren’t sure. Some sources treat Magnes as a legendary founder-figure of the Magnetes tribe, which would make both explanations (the place name and the personal name) point back to the same root.
Thales and the First Written Descriptions
The philosopher Thales of Miletus, who lived around 620 to 546 B.C., is the earliest thinker on record to have commented on the magnetic stone’s properties. Aristotle later quoted him as saying that the magnet must have a soul, because it could cause iron to move. Thales saw the stone’s pulling force as evidence that even seemingly lifeless objects could possess some animating quality. His reasoning was wrong, but his observation helped launch centuries of curiosity about magnetism.
By the 1st century B.C., the Roman poet Lucretius devoted passages of his epic poem “De Rerum Natura” to marveling at the phenomenon, explicitly connecting the stone’s name to the Magnesian people.
From Greek to English
The word traveled a long linguistic path before arriving in English. The Greek Magnes lithos became the Latin magnes (with the form magnetum in other grammatical cases). From Latin it passed into Old French as magnete. English borrowed the word in the late 14th century, initially as “magnes,” and by the mid-15th century the spelling had settled into “magnet.”
Meanwhile, the English-speaking world already had another word for naturally magnetic stones: “lodestone,” recorded as early as 1548. “Lode” comes from Middle English and means “way” or “course,” so a lodestone was literally a “leading stone,” a reference to its use in compasses for navigation. For centuries the two words coexisted, with “lodestone” describing the naturally magnetized rock and “magnet” gradually expanding to cover any object with magnetic properties.
Words That Share the Same Root
Magnesia didn’t just give us “magnet.” The same region lent its name to several other scientific terms. Magnesium, the lightweight metal essential to human biology, traces its name back to minerals found in the Magnesian area. Manganese, another element, has the same etymological ancestor. The mineral magnetite itself wasn’t formally named until 1845, when the Austrian mineralogist Wilhelm Karl von Haidinger chose the name as a direct nod to the original Greek locality.
So a single stretch of rocky hillside in central Greece, settled by a tribe of early Greeks who may have been the first to notice that certain stones could grip iron, ended up stamped permanently into the vocabulary of physics, chemistry, and geology.