unity in WordNet English dictionary

1. the smallest whole number or a numeral representing this number
   "he has the one but will need a two and three to go with it"; "they had lunch at one"
   one  1  I  ace  single  unity 
   
2. an undivided or unbroken completeness or totality with nothing wanting
   "the integrity of the nervous system is required for normal development"; "he took measures to insure the territorial unity of Croatia"
   integrity  unity  wholeness 
   
3. the quality of being united into one
   oneness  unity