union
/ˈjunjən/
the set containing all elements from two or more sets
union in a sentence
“The union of {1,2} and {2,3} is {1,2,3}.”
Origin of union
Latin unio oneness, unity, from unus one
Related Words
intersection
the set of elements common to two or more sets
cardinality
the number of elements in a set
bijection
a one-to-one correspondence between two sets
predicate
a statement containing variables that becomes true or false when values are assigned
quantifier
a symbol specifying the quantity of specimens in a domain
tautology
a statement that is true under all possible interpretations