9 Grammatical Pitfalls


[kee-moh, kem-oh] /ˈki moʊ, ˈkɛm oʊ/
noun, plural chemos. Informal.
chemotherapy or a chemotherapy treatment.
Origin of chemo
by shortening; see -o


a combining form with the meanings “chemical,” “chemically induced,” “chemistry,” used in the formation of compound words:
Also, especially before elements of Latin origin, chemi-.
Also, especially before a vowel, chem-.
chem-, extracted from chemical or chemistry + -o- or -i- Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for chemo
  • Indeed, he faces the possibility of not being at all if the chemo proves useless.
  • And of all patients, for the cancer patient to have to worry about whether the chemo drug they are receiving is counterfeit.
  • The seventh week of radiation after three chemo sessions, for starters.
  • The chemo-radiation used to treat skin cancers is the wrong therapy for lymphomas.
  • The second protein, in turn, toggles the chemo drug to its active state.
  • People have already been trying to target chemo drugs for many years with limited success.
  • It's one thing for the chemo to be treated for all users, or liver disease.
  • chemo also affects healthy cells causing nutrition to now be a predator, creating a new disease.
  • My older brother is dying of chemo and radiation poisoning.
  • The chemo up until that point had the predicted side effects.
British Dictionary definitions for chemo


(informal) short for chemotherapy


combining form
indicating that chemicals or chemical reactions are involved: chemotherapy
Word Origin
New Latin, from Late Greek khēmeia; see alchemy
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
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Word Origin and History for chemo


before vowels chem-, word-forming element denoting "relation to chemical action or chemicals," from comb. form of chemical (adj.), used to form scientific compound words from c.1900.

Online Etymology Dictionary, © 2010 Douglas Harper
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chemo in Medicine

chemo che·mo (kē'mō, kěm'ō)
Chemotherapy or a chemotherapeutic treatment.

chemo- or chemi- or chem-
Chemicals; chemical: chemotherapy.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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