| domain | (noun) the content of a particular field of knowledge | Synonyms: knowledge base, knowledge domain |
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| (noun) people in general; especially a distinctive group of people with some shared interest | Synonyms: world |
| (noun) (mathematics) the set of values of the independent variable for which a function is defined | Synonyms: domain of a function |
| (noun) territory over which rule or control is exercised | Synonyms: demesne, land |
| (noun) a particular environment or walk of life | Synonyms: area, arena, field, orbit, sphere |
| legerdemain | (noun) an illusory feat; considered magical by naive observers | Synonyms: conjuration, conjuring trick, deception, illusion, magic, magic trick, thaumaturgy, trick |
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| main | (noun) a principal pipe in a system that distributes water or gas or electricity or that collects sewage | - |
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| (noun) any very large body of (salt) water | Synonyms: briny |
| mortmain | (noun) the oppressive influence of past events or decisions | Synonyms: dead hand, dead hand of the past |
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| (noun) real property held inalienably (as by an ecclesiastical corporation) | Synonyms: dead hand |
| ptomain | (noun) any of various amines (such as putrescine or cadaverine) formed by the action of putrefactive bacteria | Synonyms: ptomaine |
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