| futility | (noun) uselessness as a consequence of having no practical result | - |
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| inutility | (noun) the quality of having no practical use | Synonyms: unusefulness, uselessness |
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| mutilation | (noun) the act of damaging the appearance or surface of something | Synonyms: defacement, disfiguration, disfigurement |
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| (noun) an injury that causes disfigurement or that deprives you of a limb or other important body part | - |
| mutilator | (noun) a person who mutilates or destroys or disfigures or cripples | Synonyms: maimer, mangler |
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| nautilus | (noun) cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions | Synonyms: chambered nautilus, pearly nautilus |
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| (noun) cephalopod mollusk of warm seas whose females have delicate papery spiral shells | Synonyms: Argonaut, Argonauta argo, paper nautilus |
| (noun) a submarine that is propelled by nuclear power | Synonyms: nuclear-powered submarine, nuclear submarine |
| overutilisation | (noun) exploitation to the point of diminishing returns | Synonyms: overexploitation, overuse, overutilization |
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| overutilization | (noun) exploitation to the point of diminishing returns | Synonyms: overexploitation, overuse, overutilisation |
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| rutile | (noun) a mineral consisting of titanium dioxide in crystalline form; occurs in metamorphic and plutonic rocks and is a major source of titanium | - |
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| utilisation | (noun) the act of using | Synonyms: employment, exercise, usage, use, utilization |
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| utiliser | (noun) someone who puts to good use | Synonyms: utilizer |
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| utilitarian | (noun) someone who believes that the value of a thing depends on its utility | - |
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| utilitarianism | (noun) doctrine that the useful is the good; especially as elaborated by Jeremy Bentham and James Mill; the aim was said to be the greatest happiness for the greatest number | - |
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| utility | (noun) the service (electric power or water or transportation) provided by a public utility | - |
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| (noun) a facility composed of one or more pieces of equipment connected to or part of a structure and designed to provide a service such as heat or electricity or water or sewage disposal | - |
| (noun) the quality of being of practical use | Synonyms: usefulness |
| (noun) (computer science) a program designed for general support of the processes of a computer | Synonyms: service program, utility program |
| (noun) a company that performs a public service; subject to government regulation | Synonyms: public-service corporation, public utility, public utility company |
| (noun) (economics) a measure that is to be maximized in any situation involving choice | - |
| utilization | (noun) the act of using | Synonyms: employment, exercise, usage, use, utilisation |
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| (noun) the state of having been made use of | - |
| utilizer | (noun) someone who puts to good use | Synonyms: utiliser |
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