Definition of biological in English:


Line breaks: bio|logic¦al
Pronunciation: /bʌɪə(ʊ)ˈlɒdʒɪk(ə)l


  • 1Relating to biology or living organisms.
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    • IBM has unveiled an ambitious initiative to develop technologies that share the basic biological abilities of living organisms.
    • This heavy metal has no known biological function in living organisms.
    • Biotechnology is the use of living organisms or biological substances to discover or produce therapeutic remedies.
    biotic, biologic, organic, living; botanic, botanical, zoologic, zoological
  • 1.1(Of a detergent or other cleaning product) containing enzymes to assist the process of cleaning.
    More example sentences
    • Use biological washing powder to clean your roasting tins: sprinkle in a cup of powder, add warm water and leave to soak for an hour
    • Biological cleaning solutions, being natural and generally harmless, are very safe to use meaning cleaning staff are protected during general use and in the event of accidental spillages
    • The pre-treatment and/or post-treatment baths are compatible with the biological cleaning bath and during operation of the system, the used pre-treatment and/or post-treatment baths are recycled to the biological cleaning solution for biodegradation.
  • 1.2Relating to or involving the use of microorganisms or toxins of biological origin as weapons of war.
    More example sentences
    • Chemical toxins differ from biological weapons in that they are nonliving pathogens and require direct infection and contact with the victim.
    • To reduce the severity and extent of war if it does break out, for example by limiting possession and use of nuclear and chemical and biological weapons.
    • This element is the presence of weapons of mass destruction, WMD, which includes chemical, toxin, biological, and nuclear weapons.
  • 2(Of a parent or child) related by blood; natural: his biological mother
    More example sentences
    • And the mother and father, the biological parents of this baby were in the wind but the grandparents lived in New Jersey.
    • Scientists are to carry out the first British experiments on human embryos that would create a baby with three biological parents - two mothers and a father.
    • Parenting is separated from sexuality in a way that it is not for heterosexual parents with biological children.


(usually biologicals) Back to top  
  • A substance of biological origin used as a drug, vaccine, pesticide, etc.: a wide spectrum of biologicals are produced from animal cells in culture
    More example sentences
    • Pass-Through Codes are temporary codes for which hospital outpatient departments receive payments in addition to the APC rate for certain biologicals, drugs, and innovative medical devices.
    • The Merck index: an encyclopedia of chemicals, drugs & biologicals.
    • The MMA changed the payment rates for many drugs, biologicals, and services.



More example sentences
  • I know addiction is biologically based, but I still wonder what it's like to go down that path.
  • However… an impersonal relationship is not a biologically human one.
  • Some sex differences will always endure, being biologically founded; but many will not, having social roots.

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Pronunciation: grəʊˈtɛskəri
grotesque quality or grotesque things collectively