What does camphor mean?
Camphor is a white, waxy crystalline solid with a penetrating, aromatic smell, obtained by distilling the wood and leaves of the camphor tree (Cinnamomum camphora) or produced synthetically from turpentine. Prized for centuries across Asia for its medicinal and preservative properties, it has long been an ingredient in liniments, inhalants, and remedies for coughs and congestion, and its strong odour made it a traditional deterrent against moths and other insects. In industry, camphor played a famous role as the plasticiser that made celluloid workable, helping launch the age of plastics. In English, the word functions chiefly as an uncountable noun for the substance itself, though it can also denote blocks or lumps of the material. Its associations are distinctly old-world: apothecary cabinets, cedar-lined chests, and grandmother's remedy drawer. Derived forms such as camphoric and camphoraceous appear mainly in technical and botanical writing.
nounA white, crystalline substance with a strong aromatic odour, obtained from the wood of the camphor tree or made synthetically, used in medicine, moth repellents, and plastics such as celluloid.
- A white crystalline aromatic substance from the camphor tree or synthesised, used as a plasticiser, moth repellent, and medicinal ingredient.
- The evergreen camphor tree (Cinnamomum camphora) itself, especially in East Asian contexts.
"The old cedar chest smelled faintly of camphor."
"She rubbed camphor ointment on her chest to relieve the congestion."
"Mothballs of camphor were tucked between the folds of the woollen blankets."
Rare; 'camphor' is normally uncountable. The plural appears mainly when referring to distinct varieties or chemical derivatives of camphor.
"Chemists distinguish several natural camphors by their optical rotation."
The camphor tree can live over a thousand years, and one tree's wood once supplied enough camphor to keep entire households' clothes moth-free.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of camphor
The word camphor entered English in the Middle Ages via Old French camphre and medieval Latin camphora, ultimately tracing back through Arabic kāfūr to Malay kapur barus, meaning 'Barus chalk', after Barus, a port in Sumatra famed for exporting the substance. The same Arabic source gave rise to related words in many European languages, including Spanish alcanfor and Italian canfora, reflecting the long medieval trade routes along which camphor travelled westward.
Related word forms
How camphor is actually used
Camphor is uncountable when referring to the substance and countable when referring to blocks or pieces of it. It carries mildly old-fashioned, apothecary-style connotations in English, evoking medicine chests and linen closets more than modern usage.
Easily confused with camphor
Calomel is a chloride of mercury once used as a purgative, whereas camphor is an aromatic ketone derived from the camphor tree.
Naphthalene (mothballs) is a hydrocarbon distilled from coal tar, while camphor is a plant-derived crystalline ketone with a different, sweeter aroma.