Definition of biological in English:


Syllabification: bi·o·log·i·cal
Pronunciation: /ˌbīəˈläjikəl
(abbreviation: biol.)


  • 1Of or relating to biology or living organisms.
    More example sentences
    • 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
  • 1.1Genetically related; related by blood: the alleged rights of the biological father
    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.
  • 1.2(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.


(usually biologicals) Back to top  
  • A therapeutic substance, such as a vaccine or drug, derived from biological sources: an international biotechnology company with interests in biologicals, agriculture, and pharmaceutical products
    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.



Pronunciation: /-ik(ə)lē/
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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