'Nineteen' definitions:

Definition of 'nineteen'

From: WordNet
adjective
Being one more than eighteen [syn: nineteen, 19, xix]
noun
The cardinal number that is the sum of eighteen and one [syn: nineteen, 19, XIX]

Definition of 'Nineteen'

From: GCIDE
  • Nineteen \Nine"teen`\, a. [AS. nigont[=y]ne, nigont[=e]ne. See Nine, and Ten.] Nine and ten; eighteen and one more; one less than twenty; as, nineteen months. [1913 Webster]

Definition of 'Nineteen'

From: GCIDE
  • Nineteen \Nine"teen`\, n.
  • 1. The number greater than eighteen by a unit; the sum of ten and nine; nineteen units or objects. [1913 Webster]
  • 2. A symbol for nineteen units, as 19 or xix. [1913 Webster]