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a fixed oil obtained from the seed of the castor bean plant (Ricinus communis); now used primarily as a topical emollient. When taken internally it acts as a powerful cathartic; because of its strength, other agents are now preferred for treatment of digestive disorders.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
cas·tor oil(kas'ter oyl),
A fixed oil expressed from the seeds of Ricinus communis (family Euphorbiaceae); a purgative.
Farlex Partner Medical Dictionary © Farlex 2012
A colorless or pale yellowish oil extracted from the seeds of the castor-oil plant, used pharmaceutically as a laxative and skin softener and industrially as a lubricant.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
castor oilAn oil cold-pressed from the kernel of Ricinus communis seeds, which contains glycerides of ricinoleic and isoricinoleic acids—e.g., dihydroxystearin, isoricinolein, palmitin and triricinolein; it has been used externally as an emollient and internally as a laxative.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
castor oilAn oil cold-pressed from the kernel of Ricinus communis seeds, which contains glycerides of ricinoleic and isoricinoleic acids–eg, dihydroxystearin, isoricinolein, palmitin, and triricinolein; it has been used externally as an emollient and internally as a laxative. See Castor bean, Ricin.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
cas·tor oil(kas'tŏr oyl)
Fatty oil from castor beans used as a cathartic or lubricant.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
castor oilAn oil derived from the poisonous seeds of the plant, Ricinus communis and formerly used to treat CONSTIPATION.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005