Definition of Castor oil

1. Noun. A purgative extracted from the seed of the castor-oil plant; used in paint and varnish as well as medically.

Generic synonyms: Aperient, Cathartic, Physic, Purgative
Terms within: Ricinoleic Acid

Definition of Castor oil

1. Noun. the pale yellow vegetable oil extracted from the castor bean; used as a laxative and an industrial lubricant ¹

¹ Source:

Medical Definition of Castor oil

1. An oil obtained from the seed of ricinus communis. It is used as a cathartic and as a plasticiser for pharmaceutical preparations, and has been used as a bland emollient to the skin in certain dermatoses. Pharmacological action: cathartic, emollients, pharmaceutic aid. Chemical name: Castor oil (12 Dec 1998)

Castor Oil Pictures

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Lexicographical Neighbors of Castor Oil

castor-oil plant
castor bean
castor bean plant
castor beans
castor oil (current term)
castor sugar

Literary usage of Castor oil

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Analyst (1877)
"There was no castor oil at all in the pills. The Chairman : This is the case of a purchaser ... I have heard of these pills being sold as castor oil pills, ..."

2. The Merchants' Magazine and Commercial Review by Isaac Smith Homans, William Buck Dana (1851)
"Cold pressed Oil has always been considered the best That " large importations of castor oil from the East Indies has been recently made, and more is on the ..."

3. Merchants' Magazine and Commercial Review by William B. Dana (1851)
"That '• large Importations of castor oil from the East Indies have been recently made, and more .is on the way,'' is very true ; and the writer has been ..."

4. A Dictionary of Applied Chemistry by Thomas Edward Thorpe (1921)
"The total imports of castor oil into this country in 1910 were ... Crude castor oil is refined by steaming the oil, whereby the albuminous substances are ..."

5. Proceedings of the Royal Society of London by Royal Society (Great Britain) (1868)
"The alcohol which I used was prepared by distilling a mixture of castor-oil soap and caustic soda in a flask of thin copper-sheeting as quickly as possible. ..."

6. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1837)
"ei- tols the external application of castor oil, as one of the best and most ... The method of applying it, is, by rubbing the castor oil. at bed time, ..."

7. The Lancet (1842)
"An ounce of castor-oil immediately, and as soon as it operates, one of the following powders every two hours :— Calomel, gr. xii ; Opium powder, ..."

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