I. | ̷ ̷ ̷ ̷ ̷ ̷| ̷ ̷ adjective
: being one more than 72 in number
seventy-three years
— see number table
II. pronoun, plural in construction
: 73 countable persons or things not specified but under consideration and being enumerated
seventy-three are here
seventy-three were found
III. noun
1. : three and 70
2.
a. : 73 units or objects
a total of seventy-three
b. : a group or set of 73
3. : the numerable quantity symbolized by the arabic numerals 73
4. : the 73d in a set or series