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megadose

[meg-uh-dohs]
noun
  1. a dose many times the usual amount, as of a vitamin or drug.
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Origin of megadose

First recorded in 1970–75; mega- + dose
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for megadose

megadose

noun
  1. a very large dose, as of a medicine, vitamin, etc
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

megadose in Medicine

megadose

(mĕgə-dōs′)
n.
  1. An exceptionally large dose, as of a drug or vitamin.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.