Definition of biological in US English:


(also biol.)


  • 1Relating to biology or living organisms.

    • ‘In recent years, similar scenarios have been used to model the growth of cells in biological organisms.’
    • ‘Durkheim thinks modern society resembles a biological organism, where duties and functions are distributed to different organs.’
    • ‘Instead, they've argued, companies are more like biological organisms - living things that learn, evolve, and eventually die.’
    • ‘Both are important research organisms in biological laboratories.’
    • ‘Our view of the structural organization of biological membranes has recently evolved.’
    • ‘Mark Isaak has an interesting site entitled Curiosities of Biological Nomenclature that explains how biological organisms are named.’
    • ‘Biotechnology is the use of living organisms or biological substances to discover or produce therapeutic remedies.’
    • ‘She added that volcanoes also are a source of many of the essential chemicals that may be necessary for the evolution of biological organisms.’
    • ‘First of all, it has proven difficult if not impossible to establish a definition of intelligence, as a biological property of an organism, that is free of value judgment.’
    • ‘Ozone absorbs much of the high energy ultraviolet radiation from the sun that is harmful to biological organisms.’
    • ‘And what is the biological function of an organism?’
    • ‘Lipid-protein interactions are vital for the organization and function of biological membranes.’
    • ‘Chapters four through seven feature biological aspects of organisms living in, above, and below snow.’
    • ‘It is, in fact, their infectious nature which makes them useful as vectors to introduce alien genes into biological organisms.’
    • ‘It will be particularly useful for those practicing integrated pest management or just studying pests and other biological organisms in nature.’
    • ‘It seems almost a truism that the array of beneficial fitness effects must depend idiosyncratically on the biological details of an organism and its environment.’
    • ‘IBM has unveiled an ambitious initiative to develop technologies that share the basic biological abilities of living organisms.’
    • ‘Our sense organs are part of our biological organism, living organism.’
    • ‘This heavy metal has no known biological function in living organisms.’
    • ‘Biomarkers are indicators or measures of change in biological function of an organism.’
    biotic, biologic, organic, living
    View synonyms
    1. 1.1 (of a detergent or other cleaning product) containing enzymes to assist the process of cleaning.
      • ‘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.’
      • ‘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’
      • ‘Accepta 7101 is an innovative biological and enzyme treatment product which has been specifically developed for the reactivation of poorly performing septic tanks.’
      • ‘STCD-Dry Plus: Is a Natural Biological Septic Tank, Cesspool and Grease Trap Cleaner Digester and Deodorizer, using a safe and effective beneficial micro-organism enzyme catalyst blend.’
      technological, technical
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    2. 1.2 Relating to or involving the use of microorganisms or toxins of biological origin as weapons of war.
      • ‘For a long time terrorists had drawn the line at using nuclear, biological and chemical weapons.’
      • ‘And chemical and biological weapon toxins have a certain shelf life.’
      • ‘Chemical toxins differ from biological weapons in that they are nonliving pathogens and require direct infection and contact with the victim.’
      • ‘These inspectors will render an accounting of all nuclear, chemical and biological weapons programs and will help oversee their elimination.’
      • ‘They can not be used for biological weapons like anthrax, which are destroyed by the missile's impact.’
      • ‘Like chemical and biological weapons, cyber weapons can target large masses of people in both military and civilian communities.’
      • ‘Knowledge that the threat is in place; that nuclear, biological, or chemical weapons are armed and ready to be used.’
      • ‘Dum-dum bullets, chemical and biological weapons are banned outright on the basis that the military benefits of their use can never be proportionate to the suffering caused.’
      • ‘Also, the governments have to think seriously about the threat of chemical weapons and biological toxins.’
      • ‘There will be a lot more drills on how to deal with the possible use of chemical or biological weapons.’
      • ‘Chemical and biological weapons were perceived to be as devastating as a nuclear weapon at a fraction of the cost and technical expertise.’
      • ‘This element is the presence of weapons of mass destruction, WMD, which includes chemical, toxin, biological, and nuclear weapons.’
      • ‘Such preparation serves to deter the use of biological weapons, because the opponent's original asymmetric advantage has been reduced.’
      • ‘Even the use of chemical or biological weapons is problematic.’
      • ‘Because bullets, bombs, and biological weapons don't distinguish between human and non-human animals.’
      • ‘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.’
      • ‘Some in the West even believe these weapons can use biological models.’
      • ‘The use of children as weapons of war should be put on the same moral and legal footing as the use of landmines or biological weapons - simply beyond the pale.’
      • ‘The Severe Acute Respiratory Syndrome epidemic in China is a modest measure of what might occur after serious biological weapon attack in the United States.’
      • ‘Further, ballistic missiles may not be the preferred delivery method for biological weapons.’
  • 2(of a member of a person's family) genetically related; related by blood.

    ‘the rights of the biological father’
    • ‘As for that, my biological parents, my mother and father are dead.’
    • ‘But what can be said about families that are missing one parent, typically the biological father who has either left or died?’
    • ‘He had always been her parent, even more so than her own biological mother and father.’
    • ‘And the mother and father, the biological parents of this baby were in the wind but the grandparents lived in New Jersey.’
    • ‘One father who had biological children separated by four months with two different mothers, both living in the same town, was interviewed.’
    • ‘The bill does differentiate between natural guardians - the biological parents - and appointed guardians.’
    • ‘It is simply a stronger version of the relation between any child and biological parent.’
    • ‘Experts suggested that if any legal dispute arose between the two couples over who should be considered the twins' parents, then the biological mother would have a strong case.’
    • ‘The man who wreaked violence on Marlene's home right throughout her youth was not her biological father but her mother met him when she was still just a young child.’
    • ‘She says that she and her husband explained to their biological children about fostering and that the children are happy with it.’
    • ‘Parenting is separated from sexuality in a way that it is not for heterosexual parents with biological children.’
    • ‘The first time he calls for her, he pretends to the nuns that he is her father and to the girl that her biological parent (who in fact has fled the country) sent him.’
    • ‘She knew that she was not the biological daughter of her parents, she knew all along.’
    • ‘It could mean that donors would lose their right to anonymity once their offspring turn 18, allowing children to trace their biological mothers and fathers.’
    • ‘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.’
    • ‘The phrase ‘parent of grandchildren’ includes the grandmothers' biological children and their spouses.’
    • ‘At the moment, it is uncertain as to who is the biological mother and biological father of the children.’
    • ‘He claims that his mother also revealed his biological father's identity and urged that he seek him out.’
    • ‘When the fire-fighter dies, her parents - the biological grandparents - refuse to hand over the infant boy to his other mother.’
    • ‘They also say they hoped to avoid custody battles between adoptive parents and biological fathers who step forward too late.’


usually biologicals
  • 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’
    • ‘‘Our second generation of biologicals is better than the first because they fight those existing infections,’ says Wilson.’
    • ‘The information has been found to be updated and well documented for the manufacturing and quality control testing of biologicals.’
    • ‘Treated with biologicals derived from large pools of donated blood, many became infected with HIV and later died of complications from AIDS.’
    • ‘ICH S6 states that genotoxicity studies normally conducted for pharmaceuticals are not applicable or needed for biologicals, such as peptides, which are considered unlikely to react directly with DNA.’
    • ‘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.’
    • ‘William Hasletine, Human Genome Sciences's chairman and chief executive, thinks he knows the answer: biologicals.’
    • ‘Bayer's primary biologicals facility in Worthington, Minnesota, produces vaccines for horses, cattle, and swine.’
    • ‘The loss is more noticeable with expensive procedures and biologicals.’
    • ‘The standing committees will deal with biologicals and vaccines, pharmacovigilance, and pharmacy and standards.’
    • ‘Don't get me wrong - I have nothing but gratitude for chemotherapy regimens and biologicals that do eliminate a legion of malignancies right here today.’
    • ‘The Merck index: an encyclopedia of chemicals, drugs & biologicals.’
    • ‘The cost of patents on biologicals used in healthcare and medicines would be even higher and more horrific.’
    • ‘Is the Medicare reimbursement for biologicals that much better than the reimbursement for advanced wound care dressings?’
    • ‘Medicare pays for devices and biologicals with passthrough codes when they are used in the outpatient wound care clinic.’
    • ‘Safety of biologicals including vaccines from bovine spongiform encephalopathies has been assured if working cell bank or working bacterial or viral seeds had been reconstituted with bovine material from countries without BSE.’
    • ‘The cost of advanced wound care dressings, drugs, devices, and biologicals will prove to be cost-effective to the department, the payers, and the patients when the wound management outcomes are documented and promoted.’
    • ‘These machines also reduce chemical exposure to employees and are capable of applying current and future products that may include both chemicals and biologicals.’
    • ‘The MMA changed the payment rates for many drugs, biologicals, and services.’
    • ‘Bayer Animal Health division's sale of its equine and livestock biologicals business in the United States and Canada to Intervet Inc. will not affect production of equine health products Legend and Baycox.’
    • ‘Treatment options comprise analgesics, non-steroidal inflammatory drugs, disease modifying drugs such as methotrexate, steroids, and the new biologicals (for example, anti-tumour necrosis factor agents).’