from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of various derivatives of urea.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. any compound, of general formula R-CO-NH-CO-NH2 or R-CO-NH-CO-NH-CO-R', formally derived by the acylation of urea

from the GNU version of the Collaborative International Dictionary of English

  • n. Any one of the many complex derivatives of urea; thus, hydantoin, and, in an extended dense, guanidine, caffeine, et., are ureides.

from The Century Dictionary and Cyclopedia

  • n. A compound of urea with an acid radical. The ureides include a large number of urea-derivatives of very complex structure.


ure(a) + -ide.
(American Heritage® Dictionary of the English Language, Fourth Edition)


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