Synonyms: ennead, 9, Nina from Carolina, nine, niner, IX
Definition: the cardinal number that is the sum of eight and one
Definition: one of the elements that collectively form a system of numeration
Usage: 0 and 1 are digits
Definition: denoting a quantity consisting of one more than eight and one less than ten
Similar words: cardinal
Definition: being or denoting a numerical quantity but not order
Usage: cardinal numbers