What does chaldron mean?
A chaldron was a unit of dry measure used for bulk goods, especially grain and coal. Unlike a standardized modern unit, its capacity could differ from one town, commodity, or historical period to another, so specifying an exact volume requires historical and regional context. Chaldrons are often associated with British coal trade, where merchants sold and transported large quantities by the measure, but the term also appeared in American regional use. Today it is chiefly encountered in archives, industrial histories, property descriptions, and old commercial records rather than ordinary conversation. Although a chaldron may sound like a large cooking vessel, it was a measure of capacity, not a pot. The word remains useful to anyone reading historical accounts of mining, agriculture, transport, or trade because it identifies a form of measurement that once structured everyday commercial activity.
nounA former dry measure used for bulk commodities such as grain and coal, especially in Britain. Its capacity varied according to locality and trade, and the measure is now chiefly encountered in historical, industrial, and commercial records.
- A former unit of dry capacity used for commodities such as grain, coal, and other bulk goods, with its value varying by locality and period.
"The coal merchant sold several loads of coal by the chaldron, following the old local measure."
"The archive records a delivery of grain measured in chaldrons."
"Local coal merchants used the chaldron to calculate their prices and deliveries."
The regular plural is chaldrons, though historical documents may use different plural constructions.
"Several chaldrons of coal were delivered to the docks."
Remembering a chaldron requires remembering a measure whose size changed from place to place.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of chaldron
The English word dates from the early 17th century and entered through French chaldron. The French word is generally traced to Spanish calderón, meaning a large cauldron or pot, which ultimately derives from Latin caldarium, a vessel for heating liquids. The Latin root is related to calidus, meaning hot.
How chaldron is actually used
This is a specialist historical term rather than everyday vocabulary. It survives in older trade records, local histories, industrial documents, and discussions of historical measures, where the relevant capacity may need to be identified.
Easily confused with chaldron
A chaldron was a unit for measuring dry bulk goods, whereas a cauldron is a large pot used for cooking or heating liquids.