dually meaning, dually definition | English Cobuild dictionary

Collins

dual

  

      adj  
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  
      n  
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  
See also:

ducally, dully, dally, dual

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"Collins English Dictionary 5th Edition first published in 2000 © HarperCollins Publishers 1979, 1986, 1991, 1994, 1998, 2000 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"