annuality

词干

后缀

-ity: Used to form an uncountable noun from an adjective; especially, to form the noun referring to the state, property, or quality of conforming to the adjective's description. · Used to form a countable noun from an adjective, referring to someone or something that conforms to the adjective's description.

From annual +‎ -ity.

1The condition of being annual.
2(economics) The restriction that a budget must be spent by the end of a financial year and cannot be carried over.