from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An alkaloid extracted from the seeds of the castor oil plant.

from the GNU version of the Collaborative International Dictionary of English

  • n. A bitter white crystalline alkaloid (C8H8N2O2) extracted from the seeds of the castor-oil plant (Ricinus communalis). Called also ricidine. Ingestion may cause vomiting and various other toxic reactions, including liver and kidney damage, convulsions, hypotension, and death.

from The Century Dictionary and Cyclopedia

  • n. A crystalline alkaloid, C16H16O4N4, found in castor beans. It crystallizes in prisms which melt at 193° C.


from Wiktionary, Creative Commons Attribution/Share-Alike License

Latin ricinus castor oil plant, and -ine.


  • The presence of ricinine in urine helps to establish whether ricin exposure has occurred, and may help estimate the degree of exposure if the time of exposure is known.

    Ricin toxicity

  • For a clinical urine specimen, measurement of ricinine can be completed within several hours after the samples are received.

    Ricin toxicity

  • Some LRN laboratories can test clinical urine samples for the presence of ricinine, an indicator of ricin exposure.

    Ricin toxicity

  • What they found in that food was ricin, ricinine and ricinoleic acid, which are components of ricin.

    CNN Transcript Jul 28, 2004

  • ELLIGER, C.A. and FULLER, G. (1972) The effect of ammoniation upon ricinine in castor meal.

    Chapter 5

  • Activation of the de novo pathway for pyridine nucleotide biosynthesis prior to ricinine biosynthesis in castor beans



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