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chemical

Syllabification: chem·i·cal
Pronunciation: /ˈkemək(ə)l
 
/
(abbreviation: chemical)

Definition of chemical in English:

adjective

1Of or relating to chemistry or the interactions of substances as studied in chemistry: the chemical composition of the atmosphere
More example sentences
  • The third atom can detach from the ozone molecule and reattach to molecules of other substances, changing their chemical composition.
  • In its simplest terms, a chemical standard is a substance for which the exact composition is known.
  • Elements are materials that cannot be reduced to simpler substances by normal chemical means.
1.1Of or relating to chemicals: chemical treatments for killing fungi
More example sentences
  • Just as the sweet smells of fall fill the air, the residents of the housing complex where I live are notified again - for the fourth time this year - of a chemical lawn treatment.
  • Councillors have been told that fitting water filtering and chemical treatment would cost £223,000 plus annual running costs of £45,220.
  • The hormone treatment is straightforward chemical castration - I am now impotent but it's an advantageous trade-off against a possibly fatal alternative.
1.2Relating to, involving, or denoting the use of poison gas or other chemicals as weapons of war: the manufacture of chemical weapons
More example sentences
  • The war that followed saw them employing chemical weapons and both sides firing ballistic missiles at major cities.
  • Aside from the nuclear variety of WMD, biological and chemical weapons pose serious dangers.
  • In previous wars it took large artillery bombardments to make chemical weapons effective.

noun

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A compound or substance that has been purified or prepared, especially artificially: never mix disinfectant with other chemicals controversy arose over treatment of apples with this chemical
More example sentences
  • There is often more than one synthetic route for preparing a desired chemical.
  • Also, the chemical plant was processing ammonium nitrate, a stable chemical that requires a substantial infusion of energy to explode.
  • It stores and processes hundreds of tonnes of toxic and highly inflammable chemicals and compounds.

Origin

late 16th century: from French chimique or modern Latin chimicus, chymicus, from medieval Latin alchymicus, from alchimia (see alchemy).

Derivatives

chemically

1
Pronunciation: /-ik(ə)lē/
adverb
Example sentences
  • It powerfully restores and deeply conditions dry, damaged and chemically treated hair giving massive shine.
  • It is thought to lower cravings for alcohol in people who have stopped drinking, but it is not exactly clear how it works chemically.
  • Many women deal with issues of power and conformity, not to mention chemically taming their hair.

Words that rhyme with chemical

academical, agrochemical, alchemical, biochemical, petrochemical, photochemical, polemical

Definition of chemical in:

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