What does cinnabar mean?
Cinnabar is a strikingly beautiful red mineral composed of mercuric sulfide (HgS) and stands as the world's most important source of mercury. Found notably in deposits such as Almadén in Spain and Huancavelica in Peru, it has been mined since antiquity. When ground into powder, cinnabar yields vermilion, one of history's most prized red pigments, used across Roman wall paintings, Chinese lacquerware, illuminated manuscripts, and traditional ink seals. In modern usage the word appears mainly in geology, art history, and chemistry, though 'cinnabar red' survives as an evocative color name suggesting a deep, warm scarlet. The word also names the black-and-red cinnabar moth. Because the mineral is toxic, the term can carry connotations of danger as well as beauty, making cinnabar a word where splendor and hazard have always been intertwined.
A bright-red mineral, mercuric sulfide (HgS), that is the principal ore of mercury; also the vivid red pigment made by grinding it.
"The museum's collection included Han-dynasty vessels coated in ground cinnabar mixed with lacquer."
In scientific contexts the word refers strictly to the mineral HgS; in art-historical contexts it commonly denotes the pigment.
A deep, slightly orange-toned shade of red named after the mineral, similar to vermilion.
"She painted her front door a bold cinnabar that echoed the temple lanterns down the street."
Used attributively ('a cinnabar dress') or as a color name; more literary and less common than 'vermilion' or 'scarlet'.
Rarely pluralized; the plural appears mainly when referring to multiple specimens or occurrences of the mineral, e.g. in geological writing.
"The survey documented several distinct cinnabars across the district's ore bodies."
Cinnabar is literally poison you can paint with — the dazzling red ore that gave the world both mercury and its most treasured pigment.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cinnabar
The word entered English via Latin 'cinnabaris', borrowed from Greek 'kinnabari', which itself was likely adopted from an Eastern source — possibly Persian or another language of Asia Minor. It has been used in English since at least the late Middle Ages, originally naming both the mineral and the resinous dragon's-blood before settling firmly on mercuric sulfide. Related terms in Romance languages, such as French cinabre and Italian cinabro, descend from the same classical lineage.
Related word forms
How cinnabar is actually used
Primarily used in geology, mineralogy, art history, and discussions of traditional pigments. Because cinnabar contains mercury, the term often carries associations of toxicity when used figuratively. As a color word, 'cinnabar' suggests a deep, slightly orange-tinged red, common in descriptions of Chinese lacquerware and seals.
Easily confused with cinnabar
Vermilion is the bright red color or pigment name, while cinnabar is the specific mercury sulfide mineral that historically supplied it.
Cinnamon is a spice from tree bark; cinnabar is unrelated in meaning despite the similar spelling.