[ kem-i-kuhl ]
See synonyms for: chemicalchemicals on

  1. a substance produced by or used in a chemical process.

  2. chemicals, Slang. narcotic or mind-altering drugs or substances.

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

  2. used in chemical warfare: chemical weapons.

Origin of chemical

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

Other words from chemical

  • chem·i·cal·ly, adverb
  • non·chem·i·cal, adjective, noun
  • pre·chem·i·cal, adjective
  • pseu·do·chem·i·cal, adjective
  • sem·i·chem·i·cal, adjective
  • sem·i·chem·i·cal·ly, adverb
  • su·per·chem·i·cal, adjective, noun
  • su·per·chem·i·cal·ly, adverb
  • un·chem·i·cal, adjective
  • un·chem·i·cal·ly, adverb

Words Nearby chemical Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use chemical in a sentence

British Dictionary definitions for chemical


/ (ˈkɛmɪkəl) /

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

  1. of or used in chemistry: chemical balance

  2. of, made from, or using chemicals: chemical fertilizer

Derived forms of chemical

  • chemically, 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

Scientific definitions for chemical


[ kĕmĭ-kəl ]

  1. Relating to or produced by means of chemistry.

  1. 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.