denumerable

拉丁语词根

‘to count out’

后缀

-able: Able to be done; fit to be done. · Relevant to or suitable to, in accordance with.

The word was introduced around the beginning of the 20th century, from Latin denumerō (“to count out”) +‎ -able.

1(mathematics) Capable of being assigned a bijection to the natural numbers. Applied to sets which are not finite, but have a one-to-one mapping to the natural numbers.