Definition of "ferric" [fer•ric]

• Of, relating to, or containing iron, especially with valence 3 or a valence higher than in a corresponding ferrous compound. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Hydrochloric acid, for example, with chalybite (ferrous carbonate) will give a solution of _ferrous_ chloride; with hæmatite (ferric oxide) it will yield _ferric_ chloride; and with magnetite (ferrous and ferric oxides) a mixture of ferrous and ferric chlorides."
• "Zerenex, the compound Keryx is developing, is an iron-based compound called ferric citrate, which we believe could potentially lower the pill burden by a third to a half for patients that have to take the phosphate binders when compared to the other drugs in the market as well, beyond Renagel/Renvela."
• "The magnetic component of the direction-giving nanoparticles is usually an iron-based compound called ferric oxide which is coated in a biocompatible surface, sometimes using, for example, fatty acids, to provide stability during the particles journey through one's body."