1. The ordinal number of sixty in counting order
   - 60th

1. Position 60 in a countable series of things
   "They celebrated their sixtieth wedding anniversary"
    
2. One part in sixty equal parts
   "A minute is one-sixtieth of an hour";
   - one-sixtieth

Derived forms: sixtieths

See also: ordinal

Type of: common fraction, rank, simple fraction, vulgar fraction [Brit]