nineteen Meaning, Definition & Usage

  1. noun the cardinal number that is the sum of eighteen and one
    19; XIX.
  2. adjective satellite being one more than eighteen
    19; xix.

WordNet

Nine"teen` adjective
Etymology
AS. nigontne, nigontne. See Nine, and Ten.
Definitions
  1. Nine and ten; eighteen and one more; one less than twenty; as, nineteen months.
Nine"teen` noun
Definitions
  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