Nine"teen` (?), a. [AS. nigontne, nigontne. See Nine, and Ten.]
Nine and ten; eighteen and one more; one less than twenty; as, nineteen months.
© Webster 1913.
Nine"teen`, n.
1. The number greater than eighteen by a unit; the sum of ten and nine; nineteen units or objects.
2. A symbol for nineteen units, as 19 or xix.
© Webster 1913.