dually definition, dually meaning | English dictionary

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1    relating to or denoting two  
2    twofold; double  
3    (in the grammar of Old English, Ancient Greek, and certain other languages) denoting a form of a word indicating that exactly two referents are being referred to  
4      (Maths, logic)   (of structures or expressions) having the property that the interchange of certain pairs of terms, and usually the distribution of negation, yields equivalent structures or expressions  
5      (Grammar)  
a    the dual number  
b    a dual form of a word  
     (C17: from Latin dualis concerning two, from duo two)  
   dually             adv  
English Collins Dictionary - English Definition & Thesaurus  
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ducally, dully, dally, dual

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