Ritalin definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a stimulant, CHNO·HCl, used to treat depression, hyperactivity in children, etc.
Ritalin definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A trademark used for methylphenidate.
ritalin - Medical Definition
A trademark for the drug methylphenidate.