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a·ri·pip·ra·zole

(ā′rə-pĭprə-zōl′)

An antipsychotic drug, C₂₃H₂₇Cl₂N₃O₂, that functions as a partial dopamine receptor agonist and is used to treat schizophrenia, bipolar disorder, and, in combination with other drugs, depression.

[Perhaps from shortening and alteration of the name of Arvid Carlsson (born 1923), Swedish pharmacologist and Nobel laureate who identified the role of dopamine as a neurotransmitter in the brain and suggested the possibility of developing partial dopamine receptor agonists as treatments for psychosis + PIP(E)RAZ(INE) + -OLE.]

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

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Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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