[ kem-i-kuh l ]
/ ˈkɛm ɪ kəl /


a substance produced by or used in a chemical process.
chemicals, Slang. narcotic or mind-altering drugs or substances.


of, used in, produced by, or concerned with chemistry or chemicals: a chemical formula; chemical agents.
used in chemical warfare: chemical weapons.

Nearby words

  1. chem.e.,
  2. chemautotroph,
  3. chemexfoliation,
  4. chemi-,
  5. chemic,
  6. chemical abuse,
  7. chemical antidote,
  8. chemical attraction,
  9. chemical bond,
  10. chemical change

Origin of chemical

1570–80; chemic + -al1; replacing chimical chemic

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for chemically

British Dictionary definitions for chemically


/ (ˈkɛmɪkəl) /


any substance used in or resulting from a reaction involving changes to atoms or molecules, especially one derived artificially for practical use


of or used in chemistrychemical balance
of, made from, or using chemicalschemical fertilizer
Derived Formschemically, adverb

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

Word Origin and History for chemically
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for chemically


[ kĕmĭ-kəl ]


Of or relating to chemistry.
Of or relating to the properties or actions of chemicals.


A substance with a distinct molecular composition that is produced by or used in a chemical process.
A drug, especially an illicit or addictive one.
Related formschemi•cal•ly adv.

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

Science definitions for chemically


[ kĕmĭ-kəl ]


Relating to or produced by means of chemistry.


A substance having a specific molecular composition, obtained by or used in a chemical process.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.